Kids these days are so sensitive its unreal. Just ask to be put in another class due to an ongoing conflict with that particular teacher and then strive to prove that particular teacher wrong by obtaining very good grades. An old science teacher of mine told me I'd never go to university and i'd not pass GCSE Science. Well I passed GCSE Science, I went to university and now I'm in a job that is significantly better he does. Not long ago I went back to the school to see old teachers who had helped me do well and he tried congratulating me. I just told him to get lost because he never believed in me then so why should I accept anything he says now? I didn't respect him then and I don't now. Respect is a two way street and its earned, not demanded, much like loyalty. The best thing you can do to prove people wrong is to become successful and do well for yourself. They hate that more than anything else.