J.M.
Hi E., My son was 4 on September 10. I am in the same boat as you but have resigned to the fact that he will be the oldest in his class, which isn't necessarily a bad thing for boys. My son is the oldest in his preschool class by only a month. A lot of kids follow close behind with Oct and Nov birthdays. While my son is very big (97th percentile) and very smart, I still feel like I'm doing him a favor by not pushing him through the system. I asked the pediatrician what she thought and she said just because he is advanced now doesn't mean he will be when he's doing calculus and logic. So, basically, my 2 cents is to enjoy your son at home for an extra year and know he will be emotionally ready for school when he's 6! Feel free to contact me if you want to talk further. I have put a lot of time and thought into this matter myself.