The use of "age appropriate" is interesting.
8th grade year is when most reclassings occur. The U15 age group allows kids old enough to be in 2017 class, current ninth graders, yet they are "age appropriate" for U15, provided they don't play JV.

How many kids on Crabs U15 are old enough to be in 2017 grad yr, born before 9/1/99? How many reclassed or did a pre-first year?