I guess you win on this one. But what about someone fulfilling their contract? What about his behavior towards the staff when they wanted to talk to him?
So it is ok not to talk to your boss when something bad happens? It is ok to to quit your post after you signed a contract? It is ok to do a midnight run?
If you don't want to go to class because you don't like the students that is ok with you? He didn't have to sign a second contract with the school. Did he?
Tell both sides of the stroy not just one side of it.