U5/U6
5v5, with the mutual agreement of both coaches, teams may play 6v6. No team may play 6 when the other team can only play 5. If when playing 6v6, one of the teams needs to go to 5 players due to an injury or a player leaving the game early then both teams shall play with 5 players.
U8
7 v 7, during REGULAR SEASON REGIONAL PLAY ONLY, both coaches may agree at the start of the game to play 8 v 8. If when playing 8v8, one of the teams needs to go to 7 players due to an injury or a player leaving the game early then both teams will play with 7 players.
U10
7 v 7, during REGULAR SEASON REGIONAL PLAY ONLY, both coaches may agree at the start of the game to play 8 v 8. If when playing 8v8, one of the teams needs to go to 7 players due to an injury or a player leaving the game early then both teams shall play with 7 players.
U12
9 v 9, during REGULAR SEASON REGIONAL PLAY ONLY, both coaches may agree at the start of the game to play 10 v 10. If when playing 10 v 10, one of the teams needs to go to 9 players due to an injury or a player leaving the game early then both teams shall play with 9 players.
U14+
11 v 11
Need ideas for running a practice? Consult one of these Online Training Resources
U5/U6
General
Dribbling
Coordination Movement
Balance & Coordination
U8
General
Dribbling
Passing
Pairs Activities
U10
General
Receiving Lofted Balls
Heading
U12
General
Defending - Pressure & Coverage
Penetration
Spatial Awareness
AYSO La Costa Matrix Coach Matt Rice has a great training blog. Check it out here.