Streetdancing at school?

I dont think it is illegal because there not really street dancing because there not on the streets but on school grounds and keeping it safe and responsible. There not there to battle with others or to even put money on it. They are there to have fun and to just have a fun and safe environment as well. Your probably doing it before class, during lunch or after school because then there SRO officers are out watching over the school and can watch what is going on. When i was in high school people used to rap during lunch, before and after school as well. I dont find anything wrong with it at all unless there putting money on it or trying to battle for something.