Like seriously, this one boy bullied me relentlessly to the point of literally kicking literal sports balls purposefully into my shins at full force and shooting hockey pucks directly into my face, and all I did was repeatedly tell the teacher. However when the next year that same boy purposefully deadnamed my friend in a class I wasn't in (After he said his preferred name he just stood up and said "you'll always be [deadname] to me") and I only heard about is several hours after the incident through my friend, I literally marched up to his locker, confronted him about it, and told him he had messed with the wrong friend group. He hasn't bullied me or my friend since.