If you are a class committee, you should take the lead in managing the class atmosphere. Only by doing it yourself can we establish personal prestige and make people listen. Then you go to find out who is the most noisy person in the class, make friends with him first, and let him trust you. Then when you are in charge of someone, he will be the first to stand up and help you maintain discipline. Of course, this is a long process, or you can launch a slogan "Always think of others". Only students who know themselves can be quiet. There are many ways, but the premise is to start from yourself and influence others with yourself. If you are not a class committee, you can't just take the place of the class committee to take care of others, otherwise the class committee will have a problem with you, so you can bring it up with them and let them do it, indirectly achieving your goal.