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<DIV align="Center" style="font-size: 10pt; margin-top: 6pt">As filed with the Securities and Exchange Commission on February&nbsp;16, 2007

</DIV>

<DIV align="right" style="font-size: 10pt; margin-top: 12pt"><B>Registration No.&nbsp;333-</B>
</DIV>


<DIV style="width: 100%; border-bottom: 2pt solid black; font-size: 1pt">&nbsp;</DIV>
<DIV style="width: 100%; border-bottom: 1pt solid black; font-size: 1pt">&nbsp;</DIV>






<DIV align="center" style="font-size: 14pt; margin-top: 12pt"><B>UNITED STATES SECURITIES AND EXCHANGE COMMISSION</B>
</DIV>

<DIV align="center" style="font-size: 12pt"><B>Washington, D.C. 20549</B>
</DIV>

<DIV align="center"><DIV style="font-size: 3pt; margin-top: 16pt; width: 26%; border-top: 1px solid #000000">&nbsp;</DIV></DIV>

<DIV align="center" style="font-size: 18pt; margin-top: 12pt"><B>FORM S-8</B>
</DIV>


<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><B>REGISTRATION STATEMENT<BR>
UNDER<BR>
THE SECURITIES ACT OF 1933</B>
</DIV>

<DIV align="center"><DIV style="font-size: 3pt; margin-top: 16pt; width: 26%; border-top: 1px solid #000000">&nbsp;</DIV></DIV>

<DIV align="center" style="font-size: 24pt; margin-top: 12pt"><B>THE ADVISORY BOARD COMPANY</B>
</DIV>

<DIV align="center" style="font-size: 10pt">(Exact Name of Registrant as Specified in Its Charter)</DIV>


<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="31%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="31%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="31%">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD nowrap align="center"><B>Delaware</B></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center"><B>2445 M Street, NW</B></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center"><B>52-1468699</B></TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD nowrap align="center" style="border-bottom: 1px solid #ffffff">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" style="border-bottom: 1px solid #ffffff"><B>Washington, DC 20037</B></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" style="border-bottom: 1px solid #ffffff"><B>&nbsp;</B></TD>
</TR>

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<TR valign="bottom">
    <TD align="center" valign="top">(State or Other Jurisdiction of <BR>
Incorporation or Organization)
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">(Address of Principal Executive<BR>
Offices Including Zip Code)
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">(I.R.S. Employer<BR>
Identification No.)</TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 12pt"><B>THE ADVISORY BOARD COMPANY 2005 STOCK INCENTIVE PLAN<BR>
THE ADVISORY BOARD COMPANY 2006 STOCK INCENTIVE PLAN</B></DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 12pt">(Full Title of the Plans)</DIV>

<DIV align="center"><DIV style="font-size: 3pt; margin-top: 16pt; width: 26%; border-top: 1px solid #000000">&nbsp;</DIV></DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 12pt"><B>Copies to:</B></DIV>

<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
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<TR valign="bottom">
    <TD width="47%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="47%">&nbsp;</TD>
</TR>
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<TR valign="bottom">
    <TD align="center" valign="top"><B>Michael T. Kirshbaum <BR>
Chief Financial Officer <BR>
The Advisory Board Company <BR>
2445 M Street, NW <BR>
Washington, DC 20037</B>
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top"><B>Steven R. Finley, Esq<BR>
Gibson, Dunn &#038; Crutcher LLP<BR>
200 Park Avenue<BR>
New York, NY 10166<BR>
(212)&nbsp;351-4000</B></TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 12pt">(Name and Address of Agent for Service)</DIV>

<DIV align="center"><DIV style="font-size: 3pt; margin-top: 16pt; width: 26%; border-top: 1px solid #000000">&nbsp;</DIV></DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 12pt"><B>(202)&nbsp;266-5600</B><BR>
(Telephone Number, Including Area Code, of Agent for Service)</DIV>

<DIV align="center"><DIV style="font-size: 3pt; margin-top: 16pt; width: 26%; border-top: 1px solid #000000">&nbsp;</DIV></DIV>


<DIV align="Center" style="font-size: 10pt; margin-top: 6pt"><B>CALCULATION OF REGISTRATION FEE</B>

</DIV>
<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="52%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD nowrap align="left" colspan="16" style="border-bottom: 1px solid #ffffff"><DIV style="width: 100%; border-bottom: 1px solid #000000; font-size: 1px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="2"><B>Proposed</B></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="2">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="2">&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="2"><B>Maximum</B></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="2"><B>Proposed Maximum</B></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="2"><B>Amount of</B></TD>
    <TD>&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD nowrap align="left"><B>Title of Securities</B></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="2"><B>Amount to be</B></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="2"><B>Offering Price</B></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="2"><B>Aggregate</B></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="2"><B>Registration</B></TD>
    <TD>&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD nowrap align="left" style="border-bottom: 1px solid #ffffff"><B>to be Registered</B></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="2" style="border-bottom: 1px solid #ffffff"><B>Registered<SUP style="font-size: 85%; vertical-align: text-top">(1)</sup></B></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="2" style="border-bottom: 1px solid #ffffff"><B>Per Share</B></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="2" style="border-bottom: 1px solid #ffffff"><B>Offering Price<SUP style="font-size: 85%; vertical-align: text-top">(2)</SUP></B></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="2" style="border-bottom: 1px solid #ffffff"><B>Fee<SUP style="font-size: 85%; vertical-align: text-top">(2)</SUP></B></TD>
    <TD>&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD nowrap align="left" colspan="16" style="border-bottom: 1px solid #ffffff"><DIV style="width: 100%; border-bottom: 1px solid #000000; font-size: 1px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
</TR>

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<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px"><B>Common Stock, $0.01
par value per share</B></DIV></TD>
    <TD>&nbsp;</TD>
    <TD colspan="3" align="center">2,800,000 shares</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">N/A</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left">$</TD>
    <TD align="right">150,738,000</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left">$</TD>
    <TD align="right">16,129</TD>
    <TD>&nbsp;</TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">(1)&nbsp;Of the 2,800,000 shares (the &#147;Shares&#148;) of the Registrant&#146;s Common Stock, $0.01 par value per
share (the &#147;Common Stock&#148;) being registered, a total of 1,600,000 Shares are reserved for issuance
pursuant to The Advisory Board Company 2005 Stock Incentive Plan (the &#147;2005 Plan&#148;), and a total of
1,200,000 Shares are reserved for issuance pursuant to The Advisory Board Company 2006 Stock
Incentive Plan (the &#147;2006 Plan&#148;). Pursuant to Rule 416(c) under the Securities Act of 1933, as
amended, this Registration Statement also registers such additional shares of Common Stock that
become available under the foregoing plans in connection with
changes in the number of outstanding shares of Common Stock because of events such as
recapitalizations, stock dividends, stock splits and reverse stock splits, and any other securities
with respect to which the outstanding Shares are converted or exchanged.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">(2)&nbsp;Estimated solely for the purpose of calculating the registration fee. The registration fee has
been calculated in accordance with Rule 457(h) under the Securities Act of 1933, as amended, based
upon the average of the high and low prices for the Common Stock on February&nbsp;14, 2007, which was
$53.835.
</DIV>


<DIV style="width: 100%; border-bottom: 1pt solid black; margin-top: 10pt; font-size: 1pt">&nbsp;</DIV>
<DIV style="width: 100%; border-bottom: 2pt solid black; font-size: 1pt">&nbsp;</DIV>









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<DIV style="font-family: 'Times New Roman',Times,serif">







<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><B>INTRODUCTION</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;This Registration Statement on Form S-8 is filed by The Advisory Board Company, a Delaware
corporation (the &#147;Registrant&#148; or the &#147;Company&#148;) relating to 2,800,000 shares of the Company&#146;s
Common Stock, par value $.01 per share (the &#147;Common Stock&#148;), to be issued under the Company&#146;s 2005
Stock Incentive Plan and the Company&#146;s 2006 Stock Incentive Plan.
</DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><B>PART I</B>
</DIV>


<DIV align="Center" style="font-size: 10pt; margin-top: 6pt"><B>INFORMATION REQUIRED IN THE SECTION 10(a) PROSPECTUS</B>

</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The information required in Part&nbsp;I of this Registration Statement is included in prospectuses
for the Company&#146;s 2005 Stock Incentive Plan and the 2006 Stock Incentive Plan that are not filed as
part of this Registration Statement pursuant to the Note to Part&nbsp;I of Form S-8.
</DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><B>PART II</B>
</DIV>


<DIV align="Center" style="font-size: 10pt; margin-top: 6pt"><B>INFORMATION REQUIRED IN THE REGISTRATION STATEMENT</B>

</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><B>Item&nbsp;3. Incorporation of Documents by Reference.</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The following documents previously filed with the Securities and Exchange Commission (the
&#147;Commission&#148;) hereby are incorporated by reference into this Registration Statement:
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt; margin-left: 2%">1. The Registrant&#146;s most recent Annual Report pursuant to Section 13(a) or 15(d) of the
Securities Exchange Act of 1934, as amended (the &#147;Exchange Act&#148;) or latest prospectus filed
pursuant to Rule 424(b) under the Securities Act of 1933, as amended (the &#147;Securities Act&#148;),
that contains audited financial statements for the Registrant&#146;s latest fiscal year for which
such statements have been filed.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt; margin-left: 2%">2. All other reports filed pursuant to Section 13(a) or 15(d) of the Exchange Act since the
end of the fiscal year covered by the Registrant&#146;s latest annual report or prospectus
referred to in (1)&nbsp;above.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt; margin-left: 2%">3. The description of the Common Stock set forth in the Registrant&#146;s Registration Statement
on Form 8-A (File No.&nbsp;000-33283), filed with the Commission on October&nbsp;30, 2001, under which
the Registrant registered the Common Stock under Section 12(g) under the Securities Exchange
Act of 1934, as amended (the &#147;Exchange Act&#148;), together with any amendment or report filed
with the Commission for the purpose of updating such description.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;All reports and other documents that the Registrant subsequently files with the Commission
pursuant to Sections&nbsp;13(a), 13(c), 14, or 15(d) of the Exchange Act, prior to the filing of a
post-effective amendment indicating that the Registrant has sold all of the securities offered
under this Registration Statement or that deregisters the distribution of all such securities then
remaining unsold, shall be deemed to be incorporated by reference into this Registration Statement
from the date that the Registrant files such report or document. Any statement contained in this
Registration Statement or any report or document incorporated into this Registration Statement by
reference, however, shall be deemed to be modified or superseded for purposes of this Registration
Statement to the extent that a statement contained in a subsequently dated report or document that
is also considered part of this Registration Statement, or in any amendment to this Registration
Statement, is inconsistent with such prior statement. The Registrant&#146;s file number with the
Commission is 000-33283.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><B>Item&nbsp;4. Description of Securities.</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Not applicable.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><B>Item&nbsp;5. Interests of Named Experts and Counsel.</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Not applicable.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><B>Item&nbsp;6. Indemnification of Directors and Officers.</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;145(a) of the Delaware General Corporation Law provides that a Delaware corporation
may indemnify any person who was or is a party or is threatened to be made a party to any
threatened, pending or completed action, suit or proceeding, whether civil, criminal,
administrative or investigative (other than an action by or in the right of the corporation) by
reason of the fact that such
person is or was a director, officer, employee or agent of the corporation, or is or was
serving at the request of the corporation as a director, officer, employee or agent of another
corporation, partnership, joint venture, trust or other enterprise, against expenses (including
attorneys&#146; fees), judgments, fines and amounts paid in settlement actually and reasonably incurred
by such person in connection with such action, suit or proceeding if he or she acted in good faith
and in a manner he reasonably believed to be in or not opposed to the best interests of the
corporation and, with respect to any criminal action or proceeding, had no reasonable cause to
believe his or her conduct was unlawful.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;145(b) of the Delaware General Corporation Law provides that a Delaware corporation
may indemnify any person who was or is a party or is threatened to be made a party to any
threatened, pending or completed action or suit by or in the right of the corporation to procure a
judgment in its favor by reason of the fact that such person acted in any of the capacities set
forth above, against expenses (including attorneys&#146; fees) actually and reasonably incurred by such
person in connection with the defense or settlement of such action or suit if he or she acted under
similar standards, except that no indemnification may be made in respect of any claim, issue or
matter as to which such person shall have been adjudged to be liable to the corporation unless and
only to the extent that the court in which such action or suit was brought shall determine that,
despite the adjudication of liability but in view of all the circumstances of the case, such person
is fairly and reasonably entitled to be indemnified for such expenses which the court shall deem
proper.
</DIV>

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<DIV style="font-family: 'Times New Roman',Times,serif">

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;145 of the Delaware General Corporation Law further provides that to the extent a
former or current director, officer, employee or agent of a corporation has been successful in the
defense of any action, suit or proceeding referred to in subsections (a)&nbsp;and (b)&nbsp;or in the defense
of any claim, issue or matter therein, such person shall be indemnified against expenses (including
attorneys&#146; fees) actually and reasonably incurred by him or her in connection therewith; that
indemnification provided for by Section&nbsp;145 shall not be deemed exclusive of any other rights to
which the indemnified party may be entitled; and empowers the corporation to purchase and maintain
insurance on behalf of a director, officer, employee or agent of the corporation against any
liability asserted against him or her or incurred by him in any such capacity or arising out of his
or her status as such whether or not the corporation would have the power to indemnify him or her
against such liabilities under Section&nbsp;145.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The Registrant&#146;s Certificate of Incorporation limits, to the maximum extent permitted by the
Delaware General Corporation Law, the personal liability of directors for monetary damages for
breach of their fiduciary duties as directors. The Registrant&#146;s Certificate of Incorporation and
Bylaws provide that the Registrant will indemnify its officers, directors and employees and other
agents to the fullest extent permitted by law. In addition, the Registrant has entered into
individual indemnification agreements with its directors and certain officers and employees. The
Registrant may, to the fullest extent permitted by the Delaware General Corporation Law, purchase
and maintain insurance on behalf of any officer, director, employee or agent against any liability
which may be asserted against such person.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><B>Item&nbsp;7. Exemption from Registration Claimed.</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Not applicable.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><B>Item&nbsp;8. Exhibits.</B>
</DIV>

<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="10%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="87%">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD nowrap align="left" style="border-bottom: 1px solid #000000"><B>Exhibit No.</B></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" style="border-bottom: 1px solid #000000"><B>Description</B></TD>
</TR>

<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">4.1
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Certificate of Incorporation of the Registrant, incorporated herein by reference
to Exhibit&nbsp;3.1 of the Registrant&#146;s Registration Statement on Form&nbsp;S-1
(Registration No.&nbsp;333-68146), as filed with the Commission on August&nbsp;22, 2001,
as amended.</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">4.2
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Bylaws of the Registrant, incorporated herein by reference to Exhibit&nbsp;3.2 of the
Registrant&#146;s Registration Statement on Form&nbsp;S-1 (Registration No.&nbsp;333-68146), as
filed with the Commission on August&nbsp;22, 2001, as amended.</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">5.1
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Opinion of Gibson, Dunn &#038; Crutcher LLP</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">10.1
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">The Advisory Board Company 2005 Stock Incentive Plan, incorporated herein by
reference to Exhibit&nbsp;10.1 of the current report on Form&nbsp;8-K (Registration No.
000-33283), as filed with the Commission on November&nbsp;17, 2005.</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">10.2
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">The Advisory Board Company 2006 Stock Incentive Plan, incorporated herein by
reference to Exhibit&nbsp;10.1 of the current report on Form&nbsp;8-K (Registration No.
000-33283), as filed with the Commission on November&nbsp;17, 2006.</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">23.1
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Consent of Gibson, Dunn &#038; Crutcher LLP (contained in Exhibit&nbsp;5.1)</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">23.2
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Consent of Ernst &#038; Young LLP</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">24.1
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Power of Attorney (included on the signature page of this Registration Statement)</TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>


<P align="center" style="font-size: 10pt"><!-- Folio -->3<!-- /Folio -->
</DIV>

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<P><HR noshade><P>
<H5 align="left" style="page-break-before:always">&nbsp;</H5><P>

<DIV style="font-family: 'Times New Roman',Times,serif">

<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><B>Item&nbsp;9. Undertakings.</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.&nbsp;The undersigned Registrant hereby undertakes:
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt; margin-left: 2%">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a) To file, during any period in which offers or sales are being made, a post-effective
amendment to this Registration Statement:
</DIV>

<DIV style="margin-top: 6pt">
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="6%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">(i)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>To include any prospectus required by Section&nbsp;10(a)(3) under the
Securities Act;</TD>
</TR>

<TR>
    <TD style="font-size: 6pt">&nbsp;</TD>
</TR><TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="6%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">(ii)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>To reflect in the prospectus any facts or events arising after the
effective date of this Registration Statement (or the most recent post-effective
amendment thereof) which, individually or in the aggregate, represent a fundamental
change in the information set forth in the registration statement. Notwithstanding
the foregoing, any increase or decrease in volume of securities offered (if the
total dollar value of securities offered would not exceed that which was registered)
and any deviation from the low or high end of the estimated maximum offering range
may be reflected in the form of prospectus filed with the Commission pursuant to
Rule 424(b) under the Securities Act if, in the aggregate, the changes in volume and
price represent no more than a 20&nbsp;percent change in the maximum aggregate offering
price set forth in the &#147;Calculation of Registration Fee&#148; table in the effective
registration statement; and</TD>
</TR>

<TR>
    <TD style="font-size: 6pt">&nbsp;</TD>
</TR><TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="6%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">(iii)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>To include any material information with respect to the plan of
distribution not previously disclosed in this Registration Statement or any material
change to such information in this Registration Statement;</TD>
</TR>

</TABLE>
</DIV>
<DIV align="left" style="font-size: 10pt; margin-top: 6pt"><I>provided, however, </I>that paragraphs (1)(a)(i) and (1)(a)(ii) do not apply if the information
required to be included in a post-effective amendment by those paragraphs is contained in periodic
reports filed by the Registrant pursuant to Section&nbsp;13 or Section 15(d) of the Exchange Act that
are incorporated by reference in this Registration Statement.
</DIV>



<DIV align="left" style="font-size: 10pt; margin-top: 6pt; margin-left: 2%">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b) That, for the purpose of determining any liability under the Securities Act, each
such post-effective amendment shall be deemed to be a new registration statement relating to the
securities offered therein, and the offering of such securities at that time shall be deemed to be
the initial bona fide offering thereof; and
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt; margin-left: 2%">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(c) To remove from registration by means of a post-effective amendment any of the
securities being registered which remain unsold at the termination of the offering.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.&nbsp;The undersigned Registrant hereby undertakes that, for purposes of determining any
liability under the Securities Act, each filing of the Registrant&#146;s annual report pursuant to
Section 13(a) or Section 15(d) of the Exchange Act that is incorporated by reference in this
Registration Statement shall be deemed to be a new registration statement relating to the
securities offered therein, and the offering of such securities at that time shall be deemed to be
the initial bona fide offering thereof.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.&nbsp;Insofar as indemnification for liabilities arising under the Securities Act may be
permitted to directors, officers and controlling persons of the Registrant pursuant to the
foregoing provisions, or otherwise, the Registrant has been advised that in the opinion of the
Commission such indemnification is against public policy as expressed in the Securities Act and is,
therefore, unenforceable. In the event that a claim for indemnification against such liabilities
(other than the payment by the Registrant of expenses incurred or paid by a director, officer or
controlling person of the Registrant in the successful defense of any action, suit or proceeding)
is asserted by such director, officer or controlling person in connection with the securities being
registered, the Registrant will, unless in the opinion of its counsel the matter has been settled
by controlling precedent, submit to a court of appropriate jurisdiction the question whether such
indemnification by it is against public policy as expressed in the Securities Act and will be
governed by the final adjudication of such issue.
</DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><B>&#091;SIGNATURES ON THE NEXT PAGE&#093;</B>
</DIV>


<P align="center" style="font-size: 10pt"><!-- Folio -->4<!-- /Folio -->
</DIV>

<!-- PAGEBREAK -->
<P><HR noshade><P>
<H5 align="left" style="page-break-before:always">&nbsp;</H5><P>

<DIV style="font-family: 'Times New Roman',Times,serif">



<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><B>SIGNATURES</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Pursuant to the requirements of the Securities Act, the Registrant certifies that it has
reasonable grounds to believe that it meets all of the requirements for filing on Form S-8 and has
duly caused this Registration Statement to be signed on its behalf by the undersigned, thereunto
duly authorized, in the City of Washington, District of Columbia, on this 16th day of February, 2007.
</DIV>

<TABLE width="100%" border="0" cellspacing="0" cellpadding="0" style="font-size: 10pt">
<TR>
    <TD width="48%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="35%">&nbsp;</TD>
    <TD width="15%">&nbsp;</TD>
</TR>
<TR>
    <TD valign="top" align="left">&nbsp;</TD>
    <TD colspan="3" align="left"><B>THE ADVISORY BOARD COMPANY</B><BR>
&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD valign="top">By:&nbsp;&nbsp;</TD>
    <TD colspan="2" style="border-bottom: 1px solid #000000" align="left">/s/ Frank J. Williams&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD valign="top">Name:&nbsp;&nbsp;</TD>
    <TD align="left">Frank J. Williams&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD valign="top">Title:&nbsp;&nbsp;</TD>
    <TD align="left">Chairman of the Board and Chief
Executive Officer&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR>
    <TD colspan="5">&nbsp;</TD>
</TR>
</TABLE>

<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><B>SIGNATURES AND POWER OF ATTORNEY</B>
</DIV>



<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Pursuant to the requirements of the Securities Act, this Registration Statement has been
signed by the following persons in the capacities and on the date indicated. Each of the directors
and/or officers of the Registrant whose signature appears below hereby appoints Frank J. Williams
and Michael T. Kirshbaum, and each of them severally as his or her attorney-in-fact to sign his or
her name and, on his or her behalf, in any and all capacities stated below, file with the
Commission any and all amendments, including post-effective amendments to this Registration
Statement as appropriate, and generally to do all such things on his or her behalf, in any and all
capacities stated below, to enable the Registrant to comply with the provisions of the Securities
Act and all requirements of the Commission.
</DIV>
<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="24%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="56%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="14%">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD nowrap align="left" style="border-bottom: 1px solid #ffffff"><B>Name and Signature</B></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="left" style="border-bottom: 1px solid #ffffff"><B>Title</B></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="left" style="border-bottom: 1px solid #ffffff"><B>Date</B></TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD nowrap align="left" colspan="5" style="border-bottom: 1px solid #ffffff"><DIV style="width: 100%; border-bottom: 1px solid #000000; font-size: 1px">&nbsp;</DIV></TD>
</TR>

<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ Frank J. Williams
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px"><DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
Frank J. Williams
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Chairman of the Board and Chief Executive Officer<BR>
(Principal Executive Officer)
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">February 16, 2007</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ Michael T. Kirshbaum
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px"><DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
Michael T. Kirshbaum
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Chief Financial Officer<BR>
(Principal Financial Officer)
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">February 16, 2007</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ Thomas J. Aprahamian
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px"><DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
Thomas J. Aprahamian
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Chief Accounting Officer, Secretary and Treasurer<BR>
(Principal Accounting Officer)
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">February 16, 2007</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ Marc N. Casper
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px"><DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
Marc N. Casper
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Director
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">February 16, 2007</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ Peter J. Grua
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px"><DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
Peter J. Grua
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Director
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">February 16, 2007</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ Kelt Kindick
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px"><DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
Kelt Kindick
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Director
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">February 16, 2007</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ Mark R. Neaman
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px"><DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
Mark R. Neaman
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Director
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">February 16, 2007</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ Leon D. Shapiro
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px"><DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
Leon D. Shapiro
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Director
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">February 16, 2007</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ LeAnne M. Zumwalt

</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px"><DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
LeAnne M. Zumwalt
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Director
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">February 16, 2007</TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>


<P align="center" style="font-size: 10pt"><!-- Folio -->5<!-- /Folio -->
</DIV>

<!-- PAGEBREAK -->
<P><HR noshade><P>
<H5 align="left" style="page-break-before:always">&nbsp;</H5><P>

<DIV style="font-family: 'Times New Roman',Times,serif">

<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><B>EXHIBIT INDEX</B>
</DIV>

<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="10%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="81%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3"><B>Sequentially</B></TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD nowrap align="left" style="border-bottom: 1px solid #000000"><B>Exhibit No.</B></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" style="border-bottom: 1px solid #000000"><B>Description</B></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3" style="border-bottom: 1px solid #000000"><B>Numbered Page</B></TD>
</TR>

<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="right" valign="top">&nbsp;</TD>
    <TD align="right" valign="top">&nbsp;</TD>
    <TD valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">4.1
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Certificate of Incorporation of the Registrant, incorporated herein by reference
to Exhibit&nbsp;3.1 of the Registrant&#146;s Registration Statement on Form&nbsp;S-1
(Registration No.&nbsp;333-68146), as filed with the Commission on August&nbsp;22, 2001,
as amended
</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="right" valign="top">&nbsp;</TD>
    <TD align="right" valign="top">N/A</TD>
    <TD nowrap valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="right" valign="top">&nbsp;</TD>
    <TD align="right" valign="top">&nbsp;</TD>
    <TD valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">4.2
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Bylaws of the Registrant, incorporated herein by reference to Exhibit&nbsp;3.2 of the
Registrant&#146;s Registration Statement on Form&nbsp;S-1 (Registration No.&nbsp;333-68146), as
filed with the Commission on August&nbsp;22, 2001, as amended
</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="right" valign="top">&nbsp;</TD>
    <TD align="right" valign="top">N/A</TD>
    <TD nowrap valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="right" valign="top">&nbsp;</TD>
    <TD align="right" valign="top">&nbsp;</TD>
    <TD valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">5.1
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Opinion of Gibson, Dunn &#038; Crutcher LLP
</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="right" valign="top">&nbsp;</TD>
    <TD align="right" valign="top">6</TD>
    <TD nowrap valign="top">&nbsp;</TD>
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    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="right" valign="top">&nbsp;</TD>
    <TD align="right" valign="top">&nbsp;</TD>
    <TD valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">10.1
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">The Advisory Board Company 2005 Stock Incentive Plan, incorporated herein by
reference to Exhibit&nbsp;10.1 of the current report on Form&nbsp;8-K (Registration No.
000-33283), as filed with the Commission on November&nbsp;17, 2005.
</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="right" valign="top">&nbsp;</TD>
    <TD align="right" valign="top">N/A</TD>
    <TD nowrap valign="top">&nbsp;</TD>
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    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="right" valign="top">&nbsp;</TD>
    <TD align="right" valign="top">&nbsp;</TD>
    <TD valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">10.2
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">The Advisory Board Company 2006 Stock Incentive Plan, incorporated herein by
reference to Exhibit&nbsp;10.1 of the current report on Form&nbsp;8-K (Registration No.
000-33283), as filed with the Commission on November&nbsp;17, 2006.
</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="right" valign="top">&nbsp;</TD>
    <TD align="right" valign="top">N/A</TD>
    <TD nowrap valign="top">&nbsp;</TD>
</TR>
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    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="right" valign="top">&nbsp;</TD>
    <TD align="right" valign="top">&nbsp;</TD>
    <TD valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">23.1
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Consent of Gibson, Dunn &#038; Crutcher LLP (contained in Exhibit&nbsp;5.1)
</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="right" valign="top">&nbsp;</TD>
    <TD align="right" valign="top">6</TD>
    <TD nowrap valign="top">&nbsp;</TD>
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    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="right" valign="top">&nbsp;</TD>
    <TD align="right" valign="top">&nbsp;</TD>
    <TD valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">23.2
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Consent of Ernst &#038; Young LLP
</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="right" valign="top">&nbsp;</TD>
    <TD align="right" valign="top">7</TD>
    <TD nowrap valign="top">&nbsp;</TD>
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    <TD align="right" valign="top">&nbsp;</TD>
    <TD valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">24.1
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Power of Attorney (included on the signature page of this Registration Statement)
</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="right" valign="top">&nbsp;</TD>
    <TD align="right" valign="top">4</TD>
    <TD nowrap valign="top">&nbsp;</TD>
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[{"type": "S-8", "sequence": "1", "filename": "w30509sv8.htm", "description": "FORM S-8", "secsgml_size_bytes": 51757}]
{"company-data": {"conformed-name": "ADVISORY BOARD CO", "cik": "0001157377", "assigned-sic": "8741", "irs-number": "521468699", "state-of-incorporation": "DE", "fiscal-year-end": "0331"}, "filing-values": {"form-type": "S-8", "act": "33", "file-number": "333-140757", "film-number": "07631364"}, "business-address": {"street1": "600 NEW HAMPSHIRE AVENUE N.W.", "city": "WASHINGTON", "state": "DC", "zip": "20037", "phone": "202-672-5600"}, "mail-address": {"street1": "600 NEW HAMPSHIRE AVENUE N.W.", "city": "WASHINGTON", "state": "DC", "zip": "20037"}}
sv8
As filed with the Securities and Exchange Commission on February 16, 2007
Registration No. 333-
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM S-8
REGISTRATION STATEMENT
UNDER
THE SECURITIES ACT OF 1933
THE ADVISORY BOARD COMPANY
(Exact Name of Registrant as Specified in Its Charter)
Delaware
2445 M Street, NW
52-1468699
Washington, DC 20037
(State or Other Jurisdiction of
Incorporation or Organization)
(Address of Principal Executive
Offices Including Zip Code)
(I.R.S. Employer
Identification No.)
THE ADVISORY BOARD COMPANY 2005 STOCK INCENTIVE PLAN
THE ADVISORY BOARD COMPANY 2006 STOCK INCENTIVE PLAN
(Full Title of the Plans)
Copies to:
Michael T. Kirshbaum
Chief Financial Officer
The Advisory Board Company
2445 M Street, NW
Washington, DC 20037
Steven R. Finley, Esq
Gibson, Dunn & Crutcher LLP
200 Park Avenue
New York, NY 10166
(212) 351-4000
(Name and Address of Agent for Service)
(202) 266-5600
(Telephone Number, Including Area Code, of Agent for Service)
CALCULATION OF REGISTRATION FEE
Proposed
Maximum
Proposed Maximum
Amount of
Title of Securities
Amount to be
Offering Price
Aggregate
Registration
to be Registered
Registered
(1)
Per Share
Offering Price
(2)
Fee
(2)
Common Stock, $0.01
par value per share
2,800,000 shares
N/A
$
150,738,000
$
16,129
(1) Of the 2,800,000 shares (the "Shares") of the Registrant's Common Stock, $0.01 par value per
share (the "Common Stock") being registered, a total of 1,600,000 Shares are reserved for issuance
pursuant to The Advisory Board Company 2005 Stock Incentive Plan (the "2005 Plan"), and a total of
1,200,000 Shares are reserved for issuance pursuant to The Advisory Board Company 2006 Stock
Incentive Plan (the "2006 Plan"). Pursuant to Rule 416(c) under the Securities Act of 1933, as
amended, this Registration Statement also registers such additional shares of Common Stock that
become available under the foregoing plans in connection with
changes in the number of outstanding shares of Common Stock because of events such as
recapitalizations, stock dividends, stock splits and reverse stock splits, and any other securities
with respect to which the outstanding Shares are converted or exchanged.
(2) Estimated solely for the purpose of calculating the registration fee. The registration fee has
been calculated in accordance with Rule 457(h) under the Securities Act of 1933, as amended, based
upon the average of the high and low prices for the Common Stock on February 14, 2007, which was
$53.835.
INTRODUCTION
This Registration Statement on Form S-8 is filed by The Advisory Board Company, a Delaware
corporation (the "Registrant" or the "Company") relating to 2,800,000 shares of the Company's
Common Stock, par value $.01 per share (the "Common Stock"), to be issued under the Company's 2005
Stock Incentive Plan and the Company's 2006 Stock Incentive Plan.
PART I
INFORMATION REQUIRED IN THE SECTION 10(a) PROSPECTUS
The information required in Part I of this Registration Statement is included in prospectuses
for the Company's 2005 Stock Incentive Plan and the 2006 Stock Incentive Plan that are not filed as
part of this Registration Statement pursuant to the Note to Part I of Form S-8.
PART II
INFORMATION REQUIRED IN THE REGISTRATION STATEMENT
Item 3. Incorporation of Documents by Reference.
The following documents previously filed with the Securities and Exchange Commission (the
"Commission") hereby are incorporated by reference into this Registration Statement:
1. The Registrant's most recent Annual Report pursuant to Section 13(a) or 15(d) of the
Securities Exchange Act of 1934, as amended (the "Exchange Act") or latest prospectus filed
pursuant to Rule 424(b) under the Securities Act of 1933, as amended (the "Securities Act"),
that contains audited financial statements for the Registrant's latest fiscal year for which
such statements have been filed.
2. All other reports filed pursuant to Section 13(a) or 15(d) of the Exchange Act since the
end of the fiscal year covered by the Registrant's latest annual report or prospectus
referred to in (1) above.
3. The description of the Common Stock set forth in the Registrant's Registration Statement
on Form 8-A (File No. 000-33283), filed with the Commission on October 30, 2001, under which
the Registrant registered the Common Stock under Section 12(g) under the Securities Exchange
Act of 1934, as amended (the "Exchange Act"), together with any amendment or report filed
with the Commission for the purpose of updating such description.
All reports and other documents that the Registrant subsequently files with the Commission
pursuant to Sections 13(a), 13(c), 14, or 15(d) of the Exchange Act, prior to the filing of a
post-effective amendment indicating that the Registrant has sold all of the securities offered
under this Registration Statement or that deregisters the distribution of all such securities then
remaining unsold, shall be deemed to be incorporated by reference into this Registration Statement
from the date that the Registrant files such report or document. Any statement contained in this
Registration Statement or any report or document incorporated into this Registration Statement by
reference, however, shall be deemed to be modified or superseded for purposes of this Registration
Statement to the extent that a statement contained in a subsequently dated report or document that
is also considered part of this Registration Statement, or in any amendment to this Registration
Statement, is inconsistent with such prior statement. The Registrant's file number with the
Commission is 000-33283.
Item 4. Description of Securities.
Not applicable.
Item 5. Interests of Named Experts and Counsel.
Not applicable.
Item 6. Indemnification of Directors and Officers.
Section 145(a) of the Delaware General Corporation Law provides that a Delaware corporation
may indemnify any person who was or is a party or is threatened to be made a party to any
threatened, pending or completed action, suit or proceeding, whether civil, criminal,
administrative or investigative (other than an action by or in the right of the corporation) by
reason of the fact that such
person is or was a director, officer, employee or agent of the corporation, or is or was
serving at the request of the corporation as a director, officer, employee or agent of another
corporation, partnership, joint venture, trust or other enterprise, against expenses (including
attorneys' fees), judgments, fines and amounts paid in settlement actually and reasonably incurred
by such person in connection with such action, suit or proceeding if he or she acted in good faith
and in a manner he reasonably believed to be in or not opposed to the best interests of the
corporation and, with respect to any criminal action or proceeding, had no reasonable cause to
believe his or her conduct was unlawful.
Section 145(b) of the Delaware General Corporation Law provides that a Delaware corporation
may indemnify any person who was or is a party or is threatened to be made a party to any
threatened, pending or completed action or suit by or in the right of the corporation to procure a
judgment in its favor by reason of the fact that such person acted in any of the capacities set
forth above, against expenses (including attorneys' fees) actually and reasonably incurred by such
person in connection with the defense or settlement of such action or suit if he or she acted under
similar standards, except that no indemnification may be made in respect of any claim, issue or
matter as to which such person shall have been adjudged to be liable to the corporation unless and
only to the extent that the court in which such action or suit was brought shall determine that,
despite the adjudication of liability but in view of all the circumstances of the case, such person
is fairly and reasonably entitled to be indemnified for such expenses which the court shall deem
proper.
2
Section 145 of the Delaware General Corporation Law further provides that to the extent a
former or current director, officer, employee or agent of a corporation has been successful in the
defense of any action, suit or proceeding referred to in subsections (a) and (b) or in the defense
of any claim, issue or matter therein, such person shall be indemnified against expenses (including
attorneys' fees) actually and reasonably incurred by him or her in connection therewith; that
indemnification provided for by Section 145 shall not be deemed exclusive of any other rights to
which the indemnified party may be entitled; and empowers the corporation to purchase and maintain
insurance on behalf of a director, officer, employee or agent of the corporation against any
liability asserted against him or her or incurred by him in any such capacity or arising out of his
or her status as such whether or not the corporation would have the power to indemnify him or her
against such liabilities under Section 145.
The Registrant's Certificate of Incorporation limits, to the maximum extent permitted by the
Delaware General Corporation Law, the personal liability of directors for monetary damages for
breach of their fiduciary duties as directors. The Registrant's Certificate of Incorporation and
Bylaws provide that the Registrant will indemnify its officers, directors and employees and other
agents to the fullest extent permitted by law. In addition, the Registrant has entered into
individual indemnification agreements with its directors and certain officers and employees. The
Registrant may, to the fullest extent permitted by the Delaware General Corporation Law, purchase
and maintain insurance on behalf of any officer, director, employee or agent against any liability
which may be asserted against such person.
Item 7. Exemption from Registration Claimed.
Not applicable.
Item 8. Exhibits.
Exhibit No.
Description
4.1
Certificate of Incorporation of the Registrant, incorporated herein by reference
to Exhibit 3.1 of the Registrant's Registration Statement on Form S-1
(Registration No. 333-68146), as filed with the Commission on August 22, 2001,
as amended.
4.2
Bylaws of the Registrant, incorporated herein by reference to Exhibit 3.2 of the
Registrant's Registration Statement on Form S-1 (Registration No. 333-68146), as
filed with the Commission on August 22, 2001, as amended.
5.1
Opinion of Gibson, Dunn & Crutcher LLP
10.1
The Advisory Board Company 2005 Stock Incentive Plan, incorporated herein by
reference to Exhibit 10.1 of the current report on Form 8-K (Registration No.
000-33283), as filed with the Commission on November 17, 2005.
10.2
The Advisory Board Company 2006 Stock Incentive Plan, incorporated herein by
reference to Exhibit 10.1 of the current report on Form 8-K (Registration No.
000-33283), as filed with the Commission on November 17, 2006.
23.1
Consent of Gibson, Dunn & Crutcher LLP (contained in Exhibit 5.1)
23.2
Consent of Ernst & Young LLP
24.1
Power of Attorney (included on the signature page of this Registration Statement)
3
Item 9. Undertakings.
1. The undersigned Registrant hereby undertakes:
(a) To file, during any period in which offers or sales are being made, a post-effective
amendment to this Registration Statement:
(i)
To include any prospectus required by Section 10(a)(3) under the
Securities Act;
(ii)
To reflect in the prospectus any facts or events arising after the
effective date of this Registration Statement (or the most recent post-effective
amendment thereof) which, individually or in the aggregate, represent a fundamental
change in the information set forth in the registration statement. Notwithstanding
the foregoing, any increase or decrease in volume of securities offered (if the
total dollar value of securities offered would not exceed that which was registered)
and any deviation from the low or high end of the estimated maximum offering range
may be reflected in the form of prospectus filed with the Commission pursuant to
Rule 424(b) under the Securities Act if, in the aggregate, the changes in volume and
price represent no more than a 20 percent change in the maximum aggregate offering
price set forth in the "Calculation of Registration Fee" table in the effective
registration statement; and
(iii)
To include any material information with respect to the plan of
distribution not previously disclosed in this Registration Statement or any material
change to such information in this Registration Statement;
provided, however,
that paragraphs (1)(a)(i) and (1)(a)(ii) do not apply if the information
required to be included in a post-effective amendment by those paragraphs is contained in periodic
reports filed by the Registrant pursuant to Section 13 or Section 15(d) of the Exchange Act that
are incorporated by reference in this Registration Statement.
(b) That, for the purpose of determining any liability under the Securities Act, each
such post-effective amendment shall be deemed to be a new registration statement relating to the
securities offered therein, and the offering of such securities at that time shall be deemed to be
the initial bona fide offering thereof; and
(c) To remove from registration by means of a post-effective amendment any of the
securities being registered which remain unsold at the termination of the offering.
2. The undersigned Registrant hereby undertakes that, for purposes of determining any
liability under the Securities Act, each filing of the Registrant's annual report pursuant to
Section 13(a) or Section 15(d) of the Exchange Act that is incorporated by reference in this
Registration Statement shall be deemed to be a new registration statement relating to the
securities offered therein, and the offering of such securities at that time shall be deemed to be
the initial bona fide offering thereof.
3. Insofar as indemnification for liabilities arising under the Securities Act may be
permitted to directors, officers and controlling persons of the Registrant pursuant to the
foregoing provisions, or otherwise, the Registrant has been advised that in the opinion of the
Commission such indemnification is against public policy as expressed in the Securities Act and is,
therefore, unenforceable. In the event that a claim for indemnification against such liabilities
(other than the payment by the Registrant of expenses incurred or paid by a director, officer or
controlling person of the Registrant in the successful defense of any action, suit or proceeding)
is asserted by such director, officer or controlling person in connection with the securities being
registered, the Registrant will, unless in the opinion of its counsel the matter has been settled
by controlling precedent, submit to a court of appropriate jurisdiction the question whether such
indemnification by it is against public policy as expressed in the Securities Act and will be
governed by the final adjudication of such issue.
[SIGNATURES ON THE NEXT PAGE]
4
SIGNATURES
Pursuant to the requirements of the Securities Act, the Registrant certifies that it has
reasonable grounds to believe that it meets all of the requirements for filing on Form S-8 and has
duly caused this Registration Statement to be signed on its behalf by the undersigned, thereunto
duly authorized, in the City of Washington, District of Columbia, on this 16th day of February, 2007.
THE ADVISORY BOARD COMPANY
By:
/s/ Frank J. Williams
Name:
Frank J. Williams
Title:
Chairman of the Board and Chief
Executive Officer
SIGNATURES AND POWER OF ATTORNEY
Pursuant to the requirements of the Securities Act, this Registration Statement has been
signed by the following persons in the capacities and on the date indicated. Each of the directors
and/or officers of the Registrant whose signature appears below hereby appoints Frank J. Williams
and Michael T. Kirshbaum, and each of them severally as his or her attorney-in-fact to sign his or
her name and, on his or her behalf, in any and all capacities stated below, file with the
Commission any and all amendments, including post-effective amendments to this Registration
Statement as appropriate, and generally to do all such things on his or her behalf, in any and all
capacities stated below, to enable the Registrant to comply with the provisions of the Securities
Act and all requirements of the Commission.
Name and Signature
Title
Date
/s/ Frank J. Williams
Frank J. Williams
Chairman of the Board and Chief Executive Officer
(Principal Executive Officer)
February 16, 2007
/s/ Michael T. Kirshbaum
Michael T. Kirshbaum
Chief Financial Officer
(Principal Financial Officer)
February 16, 2007
/s/ Thomas J. Aprahamian
Thomas J. Aprahamian
Chief Accounting Officer, Secretary and Treasurer
(Principal Accounting Officer)
February 16, 2007
/s/ Marc N. Casper
Marc N. Casper
Director
February 16, 2007
/s/ Peter J. Grua
Peter J. Grua
Director
February 16, 2007
/s/ Kelt Kindick
Kelt Kindick
Director
February 16, 2007
/s/ Mark R. Neaman
Mark R. Neaman
Director
February 16, 2007
/s/ Leon D. Shapiro
Leon D. Shapiro
Director
February 16, 2007
/s/ LeAnne M. Zumwalt
LeAnne M. Zumwalt
Director
February 16, 2007
5
EXHIBIT INDEX
Sequentially
Exhibit No.
Description
Numbered Page
4.1
Certificate of Incorporation of the Registrant, incorporated herein by reference
to Exhibit 3.1 of the Registrant's Registration Statement on Form S-1
(Registration No. 333-68146), as filed with the Commission on August 22, 2001,
as amended
N/A
4.2
Bylaws of the Registrant, incorporated herein by reference to Exhibit 3.2 of the
Registrant's Registration Statement on Form S-1 (Registration No. 333-68146), as
filed with the Commission on August 22, 2001, as amended
N/A
5.1
Opinion of Gibson, Dunn & Crutcher LLP
6
10.1
The Advisory Board Company 2005 Stock Incentive Plan, incorporated herein by
reference to Exhibit 10.1 of the current report on Form 8-K (Registration No.
000-33283), as filed with the Commission on November 17, 2005.
N/A
10.2
The Advisory Board Company 2006 Stock Incentive Plan, incorporated herein by
reference to Exhibit 10.1 of the current report on Form 8-K (Registration No.
000-33283), as filed with the Commission on November 17, 2006.
N/A
23.1
Consent of Gibson, Dunn & Crutcher LLP (contained in Exhibit 5.1)
6
23.2
Consent of Ernst & Young LLP
7
24.1
Power of Attorney (included on the signature page of this Registration Statement)
4
6