“rabbiam ,principales and teachers think is going to happen if they kick a kid out of school ? Do they think the student will change ? THE ANSWER IS NO !!”
Well, the world doesn’t revolve around one student. If 25 kids’ matzav in Yiddishkeit is at risk, then yes, the menahel should take action. If you don’t care about yourself, and you hang around with a crowd that you know don’t really like you, why do you expect others to care so much about you?