Yes, I think about one company of Marines per each Public School with orders to maintain Order at any cost up to and including DEAD would be just about the right amount of FORCE it would take to make these feral black males sit down, STFU, and behave!
Until that day comes, no highly qualified teacher is going to risk his/her life to try and teach these chimps how to add 2 + 2.
I think probably half the students want to learn but are held back by the feral other half who have no interest in learning anything or doing anything except making trouble. It would be for the best if we could cull the useless members and keep them permanently separated from the rest.