C.H.
Hi D.,
Our son turns 5 in October. We just went through this situation. Three months ago, we moved from Hawaii where the cut off is Sept., so up until our move, we thought he'd be almost 6 before entering Kinder.
We enrolled him in a great preschool and talked with the Director about a strategy to determine if he is ready or not. We placed him in a class that would have kept him in pre-school one more year. The Director and his teacher evaluated him regarding his readiness to move into Pre-K for three weeks - or until they had a pretty good idea.
They met with us to tell us that he is definitely ready to move into Pre-K. To hold him back would mean that he'd be worlds apart from the other kids in the class.
So, he transitioned (a one week transition - I love his preschool) into Pre-K and actually thinks he is the smartest kid because he skipped a grade! LOL. Hey, we're leveraging that a bit. He's become much more focused on writing and reading.
If he is in preschool, I'd talk with the director and his teacher. If not, I'd talk with the Kindergarten director at the school. My guess is that you will see that if we follow the general age groupings, our kids fall within that spectrum. And I agree with you, if he repeats Kinder, no big deal.