My son is 16 and he is in Karate classes. He never had to deal with bullying as he is 5'11" and about 240lbs (he plays football). I was proud of him at school last month these kids were bullying a much smaller freshman, the bullies were juniors in my sons class. He stepped up to the bully and explained what would happen if it kept going. The school said he was bullying the bully cause the kid complained to his parents who went to school and it was a big hoopla. Long story short I went to school advised them that my son was in the right, told the kids parents he got what he had coming if he kept up his ***.
These were wicked helicopter parents but I told them "your kid is being a *** in school to others."