We could also just do it like in Nebraska. In Nebraska, you are classified by class and not by age. 1st and 2nd grade wrestle together, 3rd and 4th, 5th and 6th, 7th and 8th ect. Of course, you have parents complaining about a kid in 8th grade who is 15 years old and already growing a beard going against a kid who just turned 12 in September......