WE had an Art teacher in Jr. High that was always looking down shirts or brushing up against girls "accidently" (remember I'm 51). It was just known in the class to wear a smock or sweater, and to watch out. The cool girls (real well built) always had a guy on each side so there was no way he could get close. So the rest of us ended up as targets.
Some of us already had experience on handling this from family menbers, and stayed after class the third time it accidently happened, and mentioned that my dad was a sherp shooter in the Army Reserves; worked for Brinks Armoured Car service; wore a gun daily; and could be on the route that included the school area any time he wanted. He left me alone for the rest of the 2 years I had him.
But I will say, A lot of the girls thought it was funny, they were just starting to find out about sex. And a few of them used it to get better grades...a bit of a flash, meant A's and B's...art being subjective. I settled for c's.