The league provides five divisions of play, designed for the needs of the players: The T-Ball division accommodates players that are six years of age; the Rookie Division accommodates players from seven to eight years of age; the AA Division accommodates players from nine to ten years of age; the AAA and Majors Divisions accommodate players from eleven to twelve years of age. League age is determined by the age the child is on April 30 preceding the baseball season. This date is determined by a consensus of national baseball leagues, not a decision made by Bismarck Youth Baseball as an individual organization. The divisions are separate and distinct providing natural progression as the players learn the fundamentals of baseball.