I eould talk to the parents and school, if nothing was resolved and it continued I would take it up with the police and file charges esp if my child was threatened or hurt. Bit as much as Id want to I would not touch the other child.
What kind of an example does that set for my kids if I turn into a bully?
As a teacher, I confront bullies all the time - verbally not physically. Yes, if a child was bullying my child I would confront them if needed, however, I've taught my children to stand up for themselves (verbally), so hopefully I wouldn't need to.
I marched up to the top of the bleachers at our district stadium to tell a boy and a girl that if they didn't stop teasing and bothering my daughter, I would report them to the police for harrassment.
We'd already involved the school and he'd stop bothering her for a bit and then start up again. I let the band director know exactly what I'd done too. Now the principal, crisis counselor, and band directors are monitoring him and his friends very closely.