Thanks everybody for your ideas. I will take them under consideration.
Our local B&N has meeting of people interested in chess (show up and play, type of deal), but it is on Monday nights. I am still trying to keep DS to a regular bedtime schedule. Maybe when he is a little older.
I really don't know much about the rating, I just remembered the number, that the teacher said that it would be his minimal estimate.
Thanks for the summer chess camps idea, I will research that. I think DS would love it.
I don't know how long he will stick with it, so far he likes it more and more. The chess club at school just fueled his interest. He is the only kid from K, one other kid from 2nd, the rest are 3rd, 4th, majority of 5th graders. I think, or hope, that this would be challenging for him at least for some time.
Last night, he had set up two boards side by side, designing some strategy or something...