Gary vandalizes school property, nearly burns down the gym, lies to the headmaster, and turns the cliques against each other to get Jimmy expelled.
He then incites a MASSIVE riot amongst the student body, leading to serious injuries throughout the place, ties up the freakin headmaster, expels several students for no good reason, sends more into therapy, and attempts to kill Jimmy.
So what does Crabblesnitch do? He expels him. He just expels him! He should have called his parents, and turned him over to be arrested for life for pulling that kind of shit! So here I am thinking, he's just going to go to another school and try to take that over. I guess Gary wasn't kidding when he said that the headmaster still liked him after all that.