Well, I'll tell ya...at our house there is a definite pattern. Our DS can only handle good behavior in one place at a time. If she's behaving a.k.a. doing lock-step what everyone else is doing, then she's an absolute emotional basket case at home. Visa-versa, when she's an angel at home, she's disrupting the entire classroom with her antics!
The best thing that works for us is enriching her free time some with brain-fulfilling activities. We've found a great workbook that we do together as a game called Critical Thinking Skills. It's a lot of fun. But mostly, that little brain needs massaging to quell the bored little monster that gets loose when she's not being taught to her potential! Ugh!
Then of course, sometimes I just have to hold her and we read, and read, and read. That has always worked!
It physically effects us all. This forum really helps. I don't feel so alone in these treacherous parenting waters!