Schools have a responsibility to ensure that all students have a safe place to learn. If there are reports of bullying, they should address them and punish the bullies. However, that shouldn't be an excuse for parents to ignore their kids if they're bullying others. Ultimately, it's up to parents to raise children who are well-balanced enough to not bully, and the school's to ensure that bullying isn't allowed.
school coz u get in more trouble at home
by schools because they can actually do something about it, unlike parents who will probably go to the school or make it worse and yell at the child\parents and then make it worse for you at school.