First of all, you have to have authority, and you have to suppress them. You are either fierce in fighting or knowledgeable, just give them a reason, a big name. Tell them about the famous people who can make a name for themselves in ancient fighting, let them see their ignorance, make them feel like frogs in the well, and maybe they will work hard from now on. If you are good at fighting or get along well in society, you can directly threaten them and say that if they fight again, you can directly hit them. Of course, this is to capture their hearts. If necessary, seize individual opportunities to show them to monkeys in class. For example, you say that you hate cheating in class, and then you find someone cheating, hehe, and then you perform exercises. Of course, choose the monkey, not the craziest one in the class, because then he will lose face, be desperate and embarrass you. Of course, don't sue your parents for those who can't afford to play. Look for those who have been beaten by you and admire you especially, and be proud of being beaten by you. It depends on your understanding of the students. You can explain the truth to them later and help them solve some fighting problems.

I have been thinking about this problem for many years, and my former teacher solved these problems very well. I was beaten by him before, but I'm not ashamed. I think he's right. In the past, most boys in our class were beaten, but they all liked the head teacher (I think it's a little fascist education). By the way, our class did well at that time, and remained the first in the county for three years ~ hehe. If necessary, we can discuss it in more detail. I won't say much about the time here.