I feel like it is only the worst 5% of kids who ruin public school for everyone else, but it’s those students who the school devotes the most resources to “fixing” or “helping” which rarely work. If the bottom 5% were sent to a different school system where the objective was just to keep them away from the other 95% and prepare them for a life of beating their wives and robbing liquor stores, the other kids would do much better.