They are all sociologists... to administer the PC curriculum, and to conduct social experiments in the classroom. The class room IS a social experiment and not a place for children to learn.
If you ever look at a kid’s text book you would be sick to your stomach.
I coached public high school baseball in SoCal for three years. I looked at my player's US History, Poli-Sci, Algebra, Chemistry, Physics and Biology texts and thought them all essentially reasonable. My fellow coaches and I always emphasized grades first.
"Are you doing okay with your subjects, guys? Does anyone feel like they need any help with anything?" These questions were asked constantly. Tutoring was also available for them.
Not that there weren't and aren't problems. Though they don't quite appear at the level you suggest. At least not here... Not yet.
(Not LAUSD.)