My daughter plays in this age group in Maryland and is on age - born after 9/1/02 - as are nearly all of her teammates. There are a handful of girls with summer birthdays on the team. In Maryland, the practice of repeating 8th grade is rampant on the boy's side (will be interesting to see if it continues after the rule change) but is all but non-existent on the girl's side. I don't consider a girl or boy a holdback if they did a pre-first year due to a summer birthday. This topic was all the rage when my 2018 son was a rising freshman and then it was never mentioned again.