Can't help worrying about the time bomb

in Cepheus class.  Cepheus have been having nightmares for two nights in a row since the biting incident in school on tuesday afternoon.  I can't help feeling heart pain and can't stop worrying about his safety as well as those of other children in his same class.  I still cannot figure out how a little girl can bite someone until so badly, the bite on his face is worse than a little dog's bite on anyone i have seen (i have been bitten by my sister's little dog before on my leg and it wasnt until so bad even).  I worry about the physchological problem of Isabelle being in the same class as Cepheus.  I wonder how they are being seperated in class right now since there is only one class, and she may strike anytime again, hurting Cepheus again or any other children in class again..

I cant help feeling guilty about sending Cepheus to school so young, at such a tender young age that he still cannot react fast enough to dangers and cant speak or express himself clearly.  I am contemplating about terminating him from his school.  Either change him to another school but again exposing him to other dangers beyond our control or should we actually get a maid to alleviate the problem?  My main focus of sending Cepheus to school initially is to allow him to learn more things, more sociable and thus happier, i do not want him to be confined within the four walls at home watching dvd and playing toys the whole day.  No doubt he has shown improvement in his speech and have learnt more things in school, is it worth it to expose him to childcare centres so early at his age?  I can tolerate if kids fight and hurt ea other for a reason, at least you can educate them the right way knowing where went wrong.  However, i just cant help feeling worried about the time bomb in his class now that can strike for no apparent reason, which is probably having a physchological problem but which is ignored by the parents for not able to identify the root cause of the issue and treat it properly.