Go for it. Your child might surprise you by not having any of the problems that you ar worried about. Better to take this opportunity than to worry about hypothetical problems. You know, a mind is a terrible thing to waste and all that ...
Personally, my son (6 year old) is in an educational environment with 10-12 year olds 3 times a week for enrichment and he thrives there and enjoys it. It is like taking him to Disneyland when it is time for those classes - he did fail in the beginning due of lack of comprehension because the teacher was not used to teaching a 6 year old. But after the teacher adjusted his style of teaching there has been no looking back. We do not regret it and we are happy to have given him this opportunity.

ETA: went back to read that your son will only be in math with the older kids. So, he has plenty of opportunity to spend recess, lunch, activities etc with his peers.

Last edited by ashley; 11/01/13 11:44 AM.