Boys, usually of seventeen or eighteen years of age, compete for the cup with rival schools from within the province of Connacht.

Current competition format is two pools [A & B] of three teams playing each other round robin.

The two other tiers cater for schools who cannot consistently compete at Senior Cup level by reason of playing population or experience.

Is the Second Tier Competition for schools with established Rugby programs but who due to lower playing numbers or do not have the high level of population experience to consistently compete at Senior Cup Level.

From 2014-15 onward the league competition winner is determined as the team finishing top after all rounds are completed.