AJ Riley
If your talking about Thunder Mountain Middle School (the school south of Desert Vista), it's a school that hasn't been in use for many years now due to lack of funding. As far as I know, the school district still owns the place, but they lease it out sometimes.

https://www.openstreetmap.org/way/333933647

It's tagged as disused:amenity=school since it's not being used, but it's not abandoned either and could potentially be opened again.

I do wish the default map would render some indication of it, but I think I used the most accurate tag for it.