OH and I were not challenged in school (we were both at the top of our classes; he skipped a year; I tested in early, and wrote with my non-dominant hand and solved problems many pages/chapters ahead during class time to reduce boredom), so perhaps that's why we are worried so early on.
These are excellent reasons to worry.
In a way it's best to hold off on group care until the child has enough emotional reserves to handle the boredom and difference if possible.
OTOH - if he enjoys the older children and you can get him in with an older group early, a play based setting might work well.
No instruction manual,
Grinity
