I went when I was in 6th grade with my brother -- he was in 4th grade. There were kids younger than us though. It was only for 4 days (camps are not as common on the west coast).

On the east coast, camps are much, much longer. I'm not sure what the kids will do with entire summers off (other than all the extra studying we're going to make them do), so we will probably send them to some sort of camp.

10 and 12 seems like a good age like my brother and i were the first time we went.

What age will you allow your LO to go to camp? Or will you allow them to go to camp at all?