How can Violence be stopped in schools?

A lot of people get in fights in schools or just have arguments where a lot of people get involved. I was wondering how many fights you've seen or been a part of. So I'm going to set up a poll over ---> there. Tell me how many you've seen and see how many others have seen as well.

Okay, so post comments on ideas of how you think you could stop fights. By the way, I think you get rewarded in some school for stopping people who are fighting.