U stands for "Under". The age designation is a popular naming scheme that soccer has been using for quite some time.
Gotta divide up somewhere
NYSA's registration cut off date, July 31st, and registration policies are intentionally consistent with Washington Youth Soccer Association. The July 31st cutoff date is not necessarily the same as the local school districts, the Elite Player Development (EDP), etc. (they have their own cutoff dates).
No matter what date is used as the cutoff date, there will be players born one day(s) after the cutoff date.
The NYSA Registrar (Registrar@NorthshoreSoccer.org) is responsible for setting local Registration policies and procedures associated with registering players.
Updated April 2016