Some excerpts from the 1972 book 'Race War in Highschool' written by a union organizer/ teacher about the conditions brought about by integrating New York schools, the amount of racial conflict basically brought education to a halt. Out of print and rare on the open market.
Page talking about one of many school riots, this one spilling out to the streets, bad enough that white students went home to get their guns and shot over the heads of rioting blacks pursuing them.
Jumping forward, a list of demands put forward by the militant black faction within the school.
Next page, detailing threats the militants made including telling the dean "you better start thinking about your wife and kids " and "white kids will get it" these threats went entirely unpunished aside from occasional 5 day suspensions, the maximum punishment allowed.
Jumping ahead again, a riot develops in the middle of a meeting over removing police officers from the school
Tables on the changing racial makeup of the school and the cratering attendance, many students wouldn't show up due to fear for their safety.
Most of these events occured 1969-70, there is much more explanation needed but essentially the authorities refused to lower the increasing proportions of blacks incoming to the school causing massive overcrowding. Union negotiations were mostly ineffective to helping anything.
Franklin K. Lane high school would eventually be somewhat saved by reducing the black proportion of the student body to 40%, but was actually closed in 2012 due to poor academic performance. I might post more if this thread has interest, but just wanted the highlights out there.