That's interesting about the school not having the same issues. I'd try to find out more to figure out why before you leave.
I think it's peer pressure. He REALLY enjoys hanging out with the other kids, and being one of the youngest, he sort of idolizes everyone. All of them. They can bring him over by playing up all the fun that everyone is having. His teacher will say, "Isaac, I know you're having fun doing abc, but if you're not over here in by the time I'm done counting to ten, we'll start doing xyz without you." Unlike at home, his peers starting something without him is enough to suck him away from whatever is holding his attention.
We're moving back to a place where we already own a home, and a place we have gone to every summer of his life. He loves finding Alaska and Wisconsin on a map or globe and showing how you get from one to the other.
