The number one thing I hate about some teachers is when they make their class a dictatorship and fail kids because they don't like them and their opinions. I mean I understand it's there class and all (actually goverrnments classroom) but that doesn't mean that they have to cancel others from having an opinion and the rightful grade just because you dont get along and just because they don't agree with your opinion. If you ask a kid to give an opinion on a topic and they give you an opinion that you don't agree with , or get into an argument where a kid makes you mad and so you carry a grudge against them you brought it on yourself for asking there opinion and the student could of been right. So how are u going to get mad because they have a different opinion. If everyone thought the same, the world would be chaotic. So instead of kicking that person out are telling them how wrong they are without even considering it and failing them because you don't like them. this is a immature display of power. Just realize that for all you teachers out there that do this you have a personal problem and do not deserve to be a teacher and like all dictatorships have proven your power will eventually fade. Just know while your grading someone else someone is not far behind grading you. it may take a while but eventually you will get the pink slip that you deserve.
