The ILH has 24 member schools[1] with over 13,000 student athletes participating in 37 different sports including cross country, track and field, swimming and diving, football, baseball, basketball, soccer, canoe paddling, kayaking, air riflery, water polo, judo, cheerleading, and sailing.

In 1911 the ILH passed a rule stating that all players must be students, after schools supplemented their teams with recent graduates.

In response to this problem, and to give their students a chance to compete in these sports, these schools pool their players together and play under the moniker "Pac-Five".

In this case, the athletes from each school must compete under their own school name, making it extremely difficult to win team awards due to the failure to meet the minimum number of athletes participating in an event in order to achieve a high team score.

Events such as the old Thanksgiving Day football game would annually draw crowds upwards of 20,000 to Honolulu Stadium to watch the league crown its champion.