I got picked on in 9th grade for a while and I finally had enough and kind of did the same thing. Stopped this guy hard. Broke my hand on him but made him permanently deaf in his right ear. Knocked out 3 teeth and broke his big brother's arm when he jumped in. Principal knew what happened and that next Monday when he saw me with a cast on, knew who it was finally. Didn't get expelled at least, because he had heard the stories from the other kids. My dad had always told me to walk away. I always tried this and this kid was bound and determined to fight. My dad is a 3rd degree brown ex Marine and always showed me how to defend myself. Never to be the aggressor or he would kick my butt.