Re: young kindergarten - holding back?
You know your child best!! so I would trust in your feelings.
That said I have an Oct. birthday and was sent to K at 4. While being the youngest did bug me at times throughout school, I adapted. I still have friends from those kindergarten days. If your son is ready for K then he will adapt to it. It is my believe that day in and day out of the same kids will create relationships.