There was a similar case recently in a small town outside Portland. Middle School boys were running down the hall slapping girls' butts. There was also a tit-poke if I remember correctly, as much as is possible with 12 year old girls. This had been part of an ongoing ritual, and both boys and girls butts were slapped by the opposite sex. Well, the parents of one girl got wound up and the two boys were hauled up on felony sex abuse charges. The victims ('cept one) didn't want to press charges but by then the wheels of justice were on a roll and bound for glory. The boys ultimately got off but they went thru way more hell than they deserved because of one parent without a sense of perspective and an overzealous DA. See
http://abcnews.go.com/TheLaw/story?id=3406214&page=1