I'm sure that everyone would rather have their child walk away - but what if they bullies won't allow that? What if the adults in the vicinity turn a blind eye because they don't want to get involved?
I had a miserable first three years at secondary school. It was never one on one - there was always a gang involved and I was followed home and beaten en route a couple of times. Once it was only a few thumps on the back which I tried to ignore while walking home and praying that the adults who could see this would intervene. The second time, my nose was bloodied.
One of the bullies was the local Police Inspector's daughter.
I recall a music lesson where the teacher left the class unattended for a while. In the interim, someone put her scarf round my neck and started to strangle me. I thought that I was going to die. When the teacher came back, she accepted that it was only "horseplay".
Staff at the school largely didn't want to know. Once, a teacher tried to help by reporting it to the SLT. I'd been beaten up in the PE changing rooms. The PE staff did nothing. At English the next period, the teacher saw the marks on my face and contacted the Depute. The Depute passed it to the Head. Nothing was done.
Finally, one of the bullies cornered me in the girls' toilets yet again. This time, she was on her own and I finished things. (No blood was shed.)
Sometimes, fighting back is the only option.
My late husband did martial arts. Children in the dojo were taught to avoid trouble at all costs. If you had no other option, you fought back.