Please also consider: removing the one or two severely disruptive students from a classroom results in drastically better education for the 20+ students who remain, which is likely a benefit to society at large.
Based on my own education, a public school where every single day the same 1 or 2 students disrupted the lesson, assaulted nearby students and forced the teachers to waste hours on maintaining order rather than teaching, the result wasn't that the median student pulled the troublemaker up, it was that the troublemaker caused the entire classroom to not learn anything.
Society would have been far better off to have the couple students unable to thrive in a conventional classroom go to an alternative school and have all the other students get a decent education.
Based on my own education, a public school where every single day the same 1 or 2 students disrupted the lesson, assaulted nearby students and forced the teachers to waste hours on maintaining order rather than teaching, the result wasn't that the median student pulled the troublemaker up, it was that the troublemaker caused the entire classroom to not learn anything.
Society would have been far better off to have the couple students unable to thrive in a conventional classroom go to an alternative school and have all the other students get a decent education.