During regular school hours???? Sheesh (for lack of permission to use stronger language) those boys should be punished like adults since they did such horrible thing - I hope the school gets in huge trouble for this... Those boys had a history of bullying this child.
What's even sadder is that these boys will probably end up having a better life than the girl will.
I have to go with blaming the parents of the boys. While I'm relatively certain they did not tell them to go out and assault girls, it's so obvious they never taught them basic human respect and values. Perhaps that's because they didn't know themselves.
Well, a little counsiling and maybe, only maybe, some sort of punishment and the boys will go on to assault people until they run into the wrong person. Nobody will remember this except the girl and her family.
I'm sorry for sounding so cynical, but these things really tick me off