My 6th grade class in Arizona turned into a riot of discipline problems after a large 14-year-old while male was transferred into it from reform school! (Race was not an issue.)
I (a high-IQ white male) had been a leader in that class, but I was transformed into a bullied victim! The male teacher could not control the bullies, so they had to have a discipline “expert” come in and lecture and threaten the class.
I survived somehow, and went on to junior high and beyond.
Instead of isolating the cancer and putting them somewhere they can be far away from victims or creating an environment where NO ONE can learn, they allow it to destroy everyone else.