I left this note while driving through during school hours. I know, I know, not while DRIVING, but I was trying to be super quick and there's a huuuge line that time of day. Anyways yes there is an official government sign here that restricts turns. It says "No Left Turn" and then another says "8-9am 3-4pm". It's super vague, but I assume it's only during school days. It restricts turning into the school during pickup and dropoff, because it would be nearly impossible to do so.