Literally, they're getting into verbal fights about god knows what and then escalating to literally punching each other and pulling hair. Another teacher and I had to separate girls from a THIRD teacher's class because that teacher didn't want to get hurt. Then we had to restrain three girls (one of them had been separated when it was just a verbal fight) while we waited for the administrators and police to get there.
And I had already prevented a fight in my own class first period. Between a pregnant girl and a guy twice her side. And the pregnant girl was the instigator.