T.H.
Hi G.,
I can't give you advice from a parents point of view but I can from a sibling's p-o-v. My brother repeated kindergarten and we also went to the same school. It was never really a big deal because the Kindergardeners were so removed from the other kids that we never even noticed. Skipping a grade in other "numbered" grades seems to be more of an issue. Kindergarden is looked at as more of a daycare from the p-o-v of the older grades so if he isn't ready to go on to 1st grade, it is more like he isn't ready to be potty trained. Just another baby step.
T.