What is the typical mix of a Uxx team? example: is a U13 team half 2018 half 2017?
Let's assume that we had a "pass system" in place and the cut-off date was August 1st.
Therefore, the U-age group system would range from August 1st of one year until July 31st of the next year.
Graduation years depend on the registration date of the kindergarden classes; let's say that December 1st is the cut-off date.
Therefore, the "older" players in the U-age system would be born between August 1st and December 1st. That covers four months.
So all things being equal, a U-age team is about 1/3rd "older" players and 2/3rds "younger" players. (Translation : A U/17 team would be 1/3rd High School Seniors and 2/3rds High School Juniors.)