Using the school calendar for age groups is practiced only in the United States and Canada; as all other FIFA members go by the calendar year. 

Previously, age groups were determined based on players born between Aug. 1 and July 31. The change to calendar year age groups will reflect the calendar year, or Jan. 1 to Dec. 31. Players are still allowed to “play up” or play in an older age group.

US Youth Soccer, a respected leader in player development for more than 40 years, has seen the evolution of the game and various changes. The US Youth Soccer Olympic Development Program has used the birth year for the grouping of players since it was established in 1977. In fact, the James P. McGuire Cup, the oldest trophy in youth sport, awarded at the annual US Youth Soccer National Championships also shows the history of teams named for their calendar year age group.

Calendar Year FAQ: [Download PDF]
Calendar Year Age Matrix 2016-2025 [Download PDF]

Click here for U.S. Soccer's official statement on the changes. More details will be provided as available regarding specific implementation for these mandates from U.S. Soccer.