Most decent students who want to learn and abide by the rules are bullied and cowed by the no-good nicks.
Socialist, single-payer, government schools in many ways resemble prisons. We should not be surprised when we see similar social pathology in socialist, single-payer, government schools that we see in prisons.
By the way,... It is likely that every prison in the U.S. is a socialist-model, single-payer, prison!