Iowa U19 male players may play on a U18 Boys team in the fall season if they are still in high school. Illinois U19 male players may play on a U18 Boys team in the spring season if they are still in high school. All substitutions must be at the centerline when the ball goes out of play and wait for permission from the referee or Assistant Referee to be given. Teams may substitute on their own throw-in, either teams' goal kick, or following a goal. Vulgar, obscene or foul language will not be tolerated by any player or coach.
Abuse includes any complaints or derogatory comments made directly or indirectly to another person.
Only three non-players are allowed in the team area. The referee will verbally warn the Head Coach for a violation, a Yellow Card will be issued to the Head Coach if the violation continues, and a Red Card will be issued to the Head Coach if the violation persists. With that information, the schedule is prepared. Additional offenses will be referred to the board of directors. A player that receives a Yellow Card must immediately be substituted out of the game until the next legal opportunity to substitute.