Before people ask why they don’t throw this punk out of school, let me remind you that schools do their best to hold onto every warm body, because that determines how much money they get from the state. Don’t let anyone tell you that government schools have anything to do with real education.
In addition, the racists want the right to perpetrate violence against whitey, with the implied threat that if a certain level of violence is not tolerated, the violence will increase. See "beatings will continue until morale improves," for a lousy parallel.
The Florida report falsification was revealed in the course of the Zimmerman murder trial. Trayvon Martin had a history of vandalism and destruction of property, but those incidents had been watered down.
Anyway, just adding another observation to yours - schools indeed do their best to hold on to every warm body, and they also do their best to present an image that deviates from reality. We even run into that in a rural, reasonably non-violent school district. The administrators lie their asses off.
We had a guy something like this (but nowhere near as violent, he just refused to do anything) when I was in high school. The school kept him locked in a storage room until he was old enough to expel.