There is a world of difference, but I’m actually going to take the schools side on this.
Kids are abusing their freedoms in schools. My guess is there was too much wrong physical contact in the school, so the school just said no more.
I’d rather a school be strict than the opposite. My daughters were in a school that had no discipline, and it was horrible. (Of course, we switched to private which is full of reasonable people and well-disciplined kid.)
Bad guess. The idiotic school officials simply institute "Zero Tolerance" policies based on the behavior of about 2% of the students, mainly so they don't have to presonally discipline anyone. As for my daughters, I've told them to tell anyone with any funny ideas that their father has his own zero tolerance policy and it's backed up by more than some days off from school. (tell them I'm psycho and I am when it comes to the kids!)
Schools are institutions of learning and of discipline. You want to mess around, do so outside the campus, maybe even at home under the doting eyes of your parents. Not in school.