Massive School Behavior issues in utero stroke epilepsy Respidal

My son is 7 years old and has bilateral brain damage from strokes he had while I was pregnant with him.  He has made remarkable progress and has defied every poor prognosis.  Our issue is his behavior.  He definitely has cognitive issues and started having seizures at 3 yrs old.  He is on Tegretol 300mg morning 500mg before bed and Keppra 9ml 2x a day.  

His behavior at school is really bad.  It swings mostly bad days with scattered excellent.  I feel it is both his behavioral management in school  and obviously part of his disability but his behaviors are better at home (of course less demands) but we are very consistant with consequenses where school has not been.

Anyway I have two questions.....Is respidal safe for people with epilepsy AND with such significant brain damage would it help?  Also he is on ALOT of seizure meds could they conflict?

Stephanie