Some teachers can be mean and some can be nice. If there nice I respect them if there mean I don't. If they shout a lot or just come in angrily most classes just automatically dislike them
Do you appreciate your teachers? Why do some people constantly put down teachers? More info in answer.
Actually, it totally depends on the teacher's behaviour if the teacher is nice everyone will like and respect them, but if the teacher is mean nobody will like or respect.