@rangerrebewThe article says he is learning disabled. As an Associate School Psychologist, I tested learning disabled children for 15 years and placed them in "special" classes if they needed to be there, and was in charge of teachers in those classes.
Some of those children, a small number, were angry at their situation, and would strike out at others. I would have to know what this child said to the neighbor children to evaluate the extent of the danger and know what his behavior was in the past - that is a critical part, knowing past behavior. Past behavior is the best predictor of future behavior. If he has actually lashed out at others before or been cruel to animals more than once, I wouldn't put him with other children at this time.
Now, serving him with legal papers at school, is nuts. That should have happened at home with his parents there.