Your age on your birthday between the 1st January and the 31st December of the current year determines which age group you will join for the season.
eg Luke turned 6 on the 5th Jan 2017 and will therefore most likely play with one of the 7’s teams. Mia turns 7 on the 20th Dec 2017 and will therefore most likely play with one of the 8’s teams.
Players are encouraged to play up one (or even two) year levels if their skill level exceeds their current age group. Please contact firstname.lastname@example.org if this is what you wish to do.