As a child of the 1950 I can gurantee you that this would never have happened. First the school system was controlled locally but more importantly the boy friends or brothers of the girls would have kicked this guys butt.
In the 50s, we lived in homes where Dad “had been to war.” They did not tolerate any such behavior. They got five of their neighbors and went to each school board members home and told them how they were going to put this behind them. Fifteen minutes a house.
My Dad was a Bronze Star Master Sgt. He could explain things.
The girls should get their boyfriend to knock the teeth out of any of those Bozos.
In his defense, have him self-identify as the Tooth Fairy.