OMG Polly thanks so much "red shirting" I didn't realize it had a name but yes most 80% of the kids in his class were already 6 their parents had deliberately held them out. I was very frustrated that they didn't have another class with more younger kids he could try.

Thanks so much for the response. Any you are right its not like he has never played with another kid his age he has even been in groups but he tires of them and goes in with the adults.

I was really worried about down the line him getting bored because he is so smart but I guess if everyone else is technically his age equivalent because they waited perhaps it will even out.

Thanks for the post