The current four-tiered league structure was officially adopted by the Shaelic Football Association on 24 February 254 AP with the establishment of the four level of the pyramid, the Shaelic Third League. The current structure went into effect for the 254-55 football season. The tier system ties the four leagues together, bound by the principle of promotion and relegation. Clubs that are successful in their league can rise higher up the tiers, while those clubs that finish at the bottom of their league can find themselves falling down through the tiers. Promotion to the next highest tier league is contingent on meeting specified criteria, as decided by the Shaelic FA.