We had a teacher at our school who also worked as a cabbie. Was famous for being fired from 4 schools before ours all for striking students. He was fired from an all girls school for breaking 3 chairs. He was throwing those chairs at students but missed each time.
Had another teacher that was fired for sleeping with 3 students. Oddly enough when a kid broke his leg on a ski trip he skied up to the kid and said "you'll be right" before leaving him up there. Just copped a warning for that.
Some people just shouldn't teach.