I had a job teaching* in a school for wards of the state when I was about 23. Ages 5-14. Many of them crack babies.
Fights happened all the time, every day.
I literally used jiu jitsu daily to restrain kids, if it was just one kid going off the rails I would get to their back, straight jacket hold their arms and throw hooks in if they were still resisting. I learned quick to pin my head against theirs to prevent headbutts.
If the kids acting crazy outnumbered the adults you gotta let em go, otherwise you will catch a book to the face while restraining a kid (literally saw that happen to a teacher).
So one day these kids go at it in class. They were bigger, older kids and the guard in the classroom (only other adult besides me) wasn’t getting involved. So that means more kids off the rails than adults in the room, so we let them go.
Decent little scrap. They both did the ghetto kung fu boxing stance with their elbows way up (blocking nothing) and threw hands, landing nothing of substance until this kid lost his balance and the other kid slammed his face into the air conditioner. BAMN.
It was memorable.
*teaching= trying to get thru the day without anyone bleeding or leaving school property.