1. Field markings. Same as a full size soccer field (scaled down), including a "penalty area." However, the only significance of the "penalty area" is to designate an area that defensive players cannot be in when a goal kick is taken. There are no penalty kicks.
2. Teams: 3 v 3 on the field at any given time; five players on a team. Substitutions at quarters and halftime. Equal playing time for all players. Each player must play at least three quarters before any player can play a full game. Ball: size 3. Separate teams for boys and girls.
3. Equipment: soccer shoes (soft cleats, not metal) or tennis shoes. Shin guards mandatory at all practices and games. No jewelry (including earrings or other body piercings), watches, barrettes, etc.
4. Referee: trained referee (youth, U8/U6 level or above). If a trained referee is unavailable, coaches should meet and decide which of them will referee the game, or how they should divide refereeing the game. Referees and coaches should emphasize safety, fairness, learning and fun. The referee should explain any infringements to the players and allow poor throw-ins to be retaken by the player originally throwing in the ball, until the player gets it right.
5. Duration of games: four quarters of approximately five minutes each, each half divided into quarters at approximately the half way point. Call quarters on a natural break in play if possible. Two and one-half minute quarter breaks, and a five minute break between halves.
6. Rules: same as regular soccer (with distances scaled down appropriately), except that there are no indirect free kicks, no offsides calls, no penalty kicks and no goalkeepers. Since the regular rules of soccer are generally in effect, the following rules, among others, apply:
7. No player may take up permanent or semi-permanent position within the "goal area" (this is the box in front of the goal which designates where goal kicks are taken from), unless there is active play in that area. Referees should instruct violators to move and in the case of repeated violations should talk to the coach. NOTE: The old rule, in effect before fall 2000, that players could not go into the goal area, has been abolished. The purpose of the current rule is to prevent players acting as de facto goalkeepers. Coaches are free to encourage players to stay back on defense.
8. Coaches should remain within 10 yards of the midfield line. Parents and coaches should not coach or instruct the players while the game is underway, but coaches may do so at the half and quarter breaks. Reasonable words of encouragement are fine at all times.
9. For safety reasons, no jewelry is allowed other than medical or religious medalions (taped down). Youngsters cannot wear earrings nor can they simply "band aid" the earring.
For reference, here are some earlier documents explaining the U6 program: