Don't talk when you enter, while the teacher is talking, while another student is talking unless you have a question and the teacher calls on you, and unless instructed to by …the teacher. .
Come to class prepared, have items in hand when you walk in and look around the room for clues on extra things that you might need during the class period. .
Follow instructions the first time they are given, this saves a lot of time that would be wasted by you trying to argue with the teacher. .
Don't take your time with transitions, remember that you are not the only one in the class which means even if your not having a good day and don't want to be there that doesn't mean the rest of the class is not ready to learn .
If you have a lot of questions that's great but some times it is better if you write them down and ask the teacher after class especially if a lot of students have questions and the teacher couldn't get to them all don't get mad and have a bad day for the rest of the day ( it's not worth that much trouble;) ) ( Full Answer )