Warn him that you will not accept this behaviour and then talk to school counselor about it
there's nothing like full blown bullying, if someone creating someone minor inconvenience against his consent that person is a bully, and i am glad you didn't chose to misuse your boxing skills, but do not stay quite about this, inform the responsible authorities, that you are disliking this behavior and it needs to stop, make sure they take action against him
this is very unhealthy environment and i will suggest you to not tolerate it any longer, please inform the people responsible for the discipline the safety and security of children , additionally it's applaudable how you did not choose violence to defend yourself , but do stand against it and make it clear that you're not supporting this behavior and it strictly needs to come to an end
Hello! Unfortunately, this is a really unpleasant situation, which many students encounter in schools and colleges. First, if possible talk to the guy who bullies you and find out the reasons of his behavior. Then you should warn him that if he keeps doing this you will have to inform your teachers, as well as both your and his parents about this. Try to explain in detail what the consequences are including his expulsion from school. In case this conversation doesn’t work, feel free to tell parents and teachers about your situation. Don’t face this problem one-to-one, ask for help, there are people who can do this. This step is necessary for both you and your offender, because very often aggressive people live in illusion of being unpunished. With the course of time they can start doing more violent things. It is vital to stop this at an early stage, so that the person doesn’t go too far.