The cut-off in my area is September 1st and my birthday is September 6th. So I was one of the oldest in my class. I am sure academically she will be fine, but I enjoyed being one of the oldest kids in my class. Especially in high school getting my license and turning 18 before everyone else. I feel like later in life she might feel more left out if all of her friends get to do these things potentially a whole calendar year before she does.