They should research their teachers better before hiring them. Like more than an interview and actually listen when the students complain about the teachers. When we do so, we usually have good reasons.
Also, I do agree that ISS or suspension is stupid for things like getting into a fight or something so minor. They said that next time I get into a fight, I'll get expelled. People are naturally going to get mad, so they can't stop it by kicking them out of school. If anything, it''ll just make them more mad.