One of the first days in first grade a boy at least half a head taller than me started giving me a hard time, we fought exchanging punches and eventually wrestling on the ground.
This is "classic" bullying and it is a good thing. At that age, even with half a head advantage, little damage can be done. It is like peewee football, the hits are relatively just as hard as in the seniors, but have very little force behind them that can do damage to kids. It is play. Not necessarily a nice experience, but a valuable one.
When we grew up I was still small at 185 cm or 6'1" compared to 198 cm or 6' 5" for the other two. So I would say I never had problem with bullying.
You have 20 cm on me! I was never bullied because of my size though and physically, I could hold my own.
Fast forward about 30 years and our daughter had a real problem at school, she really was bullied, a black boy punched her in the stomach then kept kicking her on other occasions.
Sorry to hear. This is quite different now, isn't it? As I said above "There is so little compassion and grace in individuals" - when I was a kid, there was no way a boy would hit a girl.
Hopefully, there are no issues in the future.
Though, your story reminds me of a funny incident at school with a boy named "Ben". We were maybe eight or nine and he had started karate and wanted to fight at the lunch break. I wasn't keen at all, but he kept on going and going and going. In the end, he took a fighter pose and said "go", and I immediately kicked him straight in the throat and collapsed his windpipe. He was gasping on the ground. Unfortunately, all the teacher on yard duty saw was me kicking this "poor boy" and I was punished.