U12 Guidelines:
Ball Size 4
Players
Number: Eleven per team on field; one of which is a goalkeeper
Substitutions: Between periods, at halftime and for injuries.
Playing time: Minimum of two periods per game and no player should play four periods until everyone has played three.
Teams: Separate girls and boys teams should be promoted at all levels of play.
Players’ Equipment
Footwear: Soft-cleated soccer shoes or tennis shoes.
Shinguards: MANDATORY for both practices and games, and must be covered entirely by socks.
Referee The referee must be a certified regional referee or above.
Duration of Game
Four 15-minute periods.
Halftime break of 5–10 minutes.
No other changes from play as specified in FIFA Laws of the Game Printed for the American Youth Soccer Organization.