When my DD15, who is quiet and studious, was bullied by a boy in year 7, who kept taking her pen. We discussed it as a family.
My suggestions were mostly humour, as these worked formeat school, I wrote his name on a special crayon, bought her an electric shock pen etc etc. He didn't stop.
In the end, we agreed that she should slowly and deliberately push something of his off of the desk. Whilst staring at him. When he bent to pick it up, she pushed something else off and so on.
In the end the whole class were laughing at him and he never ever did it again.
When she moved school to an all girls school, she was bullied for her vocabulary, the class giggling every time she answered a question. The school’s solution was for her not to put her hand up. Not acceptable.
So we discussed it as a family. I suggested that when the did that:
She stop speaking and stare blankly at them until they finish.
She imitate their giggling in an exagerrated manner.
She asks the teacher in front of the whole class whether they felt this was acceptable.
She explain what she was saying in short easy sloooow speech, just so that they could "get" it.
She chose her method, pointing out to each and every class teacher, when it happened, that they may need to interpret for some of the class, and it stopped.
Fights happen all of the time in her school, but she eye rolls at drama and steps away from morons. I bought her books on assertiveness and managing difficult people. We read them together.
My son manages to avoid being bullied mostly through similar methods, humour and avoiding idiots.
There are assertive alternatives to being a victim. If anyone gets violent, I would call the police. End of.