Personally, I really do believe that they majority of "top" teams have PLENTY of kids that have birthdays before 9/1. And in my mind, if you have a birthday before 9/1 you are a hold back. It doesn't matter if you have been held back before K or during Junior High, you are still a hold back. The point is, at this age the advantage does go to the older kids. We won't know for a few years if they are actually better, or if they look like a stud now because they are older. My son plays on a top team and it is loaded with "hold backs" most started school late, only a few have repeated 8th, but they are all the same. For 2020s you should be born after 8/31/01. If you are born before that, you are a hold back