difficult child only has negative behavoir issues at home. All the social deficits and "quirkiness" is apparent in school. He was classified and started the public preschool program here. But the explosive, aggressive behavoir does not take place at school. (Even at generic preschools in the past) difficult child is 4 years old. He is only in school 3 hours a day, and he is kept mentally occupied, and I expect that when school becomes a full day, and not so "fun", as he gets older, that his behavoir may spill over? Although I've heard of kids that never display the really bad behavoir in school, ever. Just wondering if anyone else has this issue?