In some school districts in Canada (I'm looking at the Ottawa-Carleton School Board District here...) defending yourself from bullying can get you expelled, and will get you at least suspended under their "zero tolerance" rules which bullies know how to game perfectly.
You're meant to tell a teacher, see, so the teacher can sit there and gaslight you with "Jamie didn't mean to hurt your feelings" while "Jamie" is grinning and mugging behind the teacher's back while you seethe quietly.
Or so I'm told by someone in the system now.