My son was horrible to another boy in middle school, and they had been friends a long time. Well, said kid and his parents showed up at my house and the parents asked if they could talk to DS. It was the most thorough shaming I've ever seen in my life. I had no clue this was going on at school, so I just watched and listened. I swear, DS was physically shrinking during this talking-to. And he deserved it. He admitted to being cruel and hurtful, admitted that the kid had been a good friend to him since he moved here, apologized and shook the kid's hand in the end. Even today, he'll tell you it was one of the most important lessons he ever learned. He's grown now with a family of his own.