Well, I believe he should be banned from attending that school ever again. I also believe that kids like this should be sent to a special school for troubled kids where there is strict security and discipline. It probably would be some form of boarding school where they are monitored heavily. If, they can get past a certain point without problems (maybe one year at that school), they can be allowed back into another public school....but on a very short leash or they are back in the boarding school.
Kids like this are wasting everyone else's time and money. They prevent good kids from having a good productive learning experience.
I remember, when I was in HS, there was a school in Nebraska that some troubled kids were sent to. Maybe in Norfolk??? Beatrice?