dont ground or yell at him for it... the other kid started it which means your kid isnt the trouble maker.. if your kid was starting shit then you give it to him, but being that he was protecting himself and stood up to the bully you pat him on the back and support him... if you ground him he will only be afraid to fight next time, and you dont want your kid to take a beating because he dont want to get grounded again... tell him even though fighting is bad and you do not approve of it, he did the right thing for not taking shit... just dont yell at him over it man, just think if you were in his shoes, the kid was picking on him, prolly threw the first punch and you tore him a new asshole... just my
