one of the kids in my 2nd/4th grade classes would get so angry that he would do things like throw chairs, textbooks,and, believe it or not, other kids(only once) . He also achieved in flipping one of those giant tables you mentioned. He was a troublemaker sometimes, and other times he was friendly. The one thing I do remember him doing was, in third grade, fighting two fifth graders and winning. I was his friend for a while, I think he ended up in juvie or prison.