We did early entrance to K for DS5. He started when he was 4yrs 10 mo. Socially he has been fine even though people tend to hold back kids in our area so most of the kids are at least a year older. Academically he didn't learn anything in K. Our DS is very tall, the second tallest in the class so that helped him not seem so young. At least with our DS, who is very competitive physically, the physical development is really the only way you can tell he is younger.This bothers him at times. But really, with your son's scores I really suggest you accelerate IF he is ready maturity wise. We have no regrets.
