For the all girls school one of the parents was the principal or some kind of director. She got the shit slapped out of her.
Then there was the very first scenario where the dad actual went to jail along with the son, but that was about it.
And I'm pretty sure they can't do anything to the parents unless they've done some illegal shit because that's the only way they can get away with it. Or either parents are controlling the school or something crazy like that. Their specifically assigned for the school environment. ( If I'm understanding correctly )

To me, it feels like they aren't trying to fix the root of the problem. Though this can't be said for all kids, aren't the parents to blame as well.
Like it doesn't seem like the parents of these kids are monitoring their school behavior and punishing them accordingly. Not one parent has been shown other than the grandfather, and his grandson wasn't even the problem.
Like what do the parents do when they learn of their child's behavior, it seems like they do nothing. Which is like adding fuel to the fire as the fire is their behavior. If I were to do something like these kids I would definitely get an ass whoopen from my mom, my phone taken away, and my card turned off. It's obvious that their parents aren't disciplining them. Though that can't be said for all of the kids.