I know of a classmate of mine. He was so bugged by his maths teacher. This teacher always humiliated my classmate for trivial things and said that he would never achieve anything in his life. My friend finally had to leave the school in Std XI, BECAUSE of him.
Fast forward to today.
The friend is now pretty good position in state bureaucracy, and looking out for that teacher to suspend him. LOL. I hope that maths teacher finds this message.