It goes on because white liberal teachers feel sorry for”those poor black children”and are sometimes even afraid of them.
On top of that,teachers are so fearful of lawsuits that effective discipline is limited.Back in my day,a few whacks from a paddle was totally acceptable.Nowadays the kid would want to fight you and the parent will want to sue you.
There are a disproportionate amount of minority teachers in the city..so your point is well off the mark. The schools I was talking about were 80% white anyway and the disruptors reflected that ratio. It's discipline that no one cares about any more. Culture corruption.