We had a Bob. From toddler group right up til juniors.
Nothing ever happened to stop it. It wasn't even SEN which could make it a bit more understandable but I know he was assessed and found to be NT. (found out from an extremely reliable source)
We had to wait it out until his mother pulled him out of school at 9. We think she jumped ship before she was pushed when a new head teacher arrived and appeared to take it seriously.
What made it worse was that his mother had been a teacher at the same school and was good friends with the other staff there who were locals. Who's going to hold a formal meeting with their drinking buddy who was on their hen do or who was their bestie from high school?
What did we do? We went in to the school and complained.
We had meetings with the head. In one meeting I told the head that every day my DS came home and told me how Bob had hurt him that day. Her response was, "Well perhaps you need to stop talking about it." I asked what she meant as it was the first thing out of DS's mouth, not mine. She replied, "You need to shut down every conversation before it starts. Don't encourage DS to keep thinking about Bob and encouraging him to make an issue out of it every day"
So basically, I needed to shut the victim up. It was so crazy that I couldn't formulate a response. I still to this day think surely I misunderstood somehow. But I know I didn't.
We had regular meetings with the teachers.
We didn't keep quiet every time our children emerged from the class with a marked face or a scribbled on piece of work. Or an uneaten lunch he had spat on.
We complained and complained.
We had public arguments with the mother.
Once we were at an event and the kids were in another room. One child kept running through, and interrupting in tears with tales of how the boy was hurting them. Eventually the boy's mum said, "Oh I'm sick of this, just bloody hit him back!" (He didn't though)
Instead of Bob's mum going out to deal with him (everyone had overheard it) she sat there not saying a word.
At the end she took the mum aside and had a go at her, asking how she'd feel if someone told their child to hit hers. The poor mum didn't know what to say but should have told her that that is what every parent feels when she allows her child to attack theirs on a daily basis. Poor mum eventually took her child out and went to another school. Bob was a factor in that decision as well as the school failing her kid.
Nothing ever happened. No action was ever taken.
It's a huge thing that all schools have a bullying policy. However, that policy is often just platitudes, stating that bullying will be dealt with etc. "Zero tolerance" is bandied about a lot. Often there isn't an actual process they have to follow. Each case is different and as such, a lot of the time teachers prefer to tell the victims "Just stay away from X then" rather than escalating it by dealing with X.
Write to the LA or parent council. Note every issue. Log everything and demand action.
Don't do what one mum did and corner Bob, get down into his face and quietly whisper to him to stay the fuck away from her child and if he so much as looks in her child's direction again then she will fucking end him". Definitely don't do that. I mean, he never went near her child again but yeah. It's wrong. Very naughty. Shouldn't do that. Nope. Shouldn't do that at all.