OK, I think we were talking past each other. I wasn't even thinking of Indiana as a conservative school system (although I guess it is). I was just taking it on the basis of this one case. I wouldn't consider someone who tries a racist move like that to be on the left, even if they're in a liberal school system. I'm surprised someone would try that in a liberal school system, actually.
Such institutional racism was more common before courts started curtailing affirmative action. Example: In the 1970s, when
I applied for a job as a reactor operator at the Phoenix Memorial Reactor at U fo M, the director told me he was under direct
orders to hire only females & minorities. My father had similar orders for part of the time when he was a manager at Ford.