The 2010 HHSAA Division I State Football Champion was the St. Louis Crusader football team. The Crusaders competed on behalf of St. Louis School in the Division I of the Interscholastic League of Honolulu during the 2010 HHSAA football season. Headcoach Darnell Arceneaux was in his 1st season with the Crusaders. St. Louis plays their home games at Aloha Stadium in Halawa, Hawaii.
St. Louis ended the 2010 season winning the Interscholastic League of Honolulu's only berth into the state tournament and the HHSAA Division I State Championship. Led by quarterback Marcus Mariota, the Crusaders were ranked #2 in the state and #122 in the nation (the Kahuku Red Raiders were ranked #1 but were barred following an investigation into an ineligible player).
In the 2009 season, St. Louis went 7-4 (3-4 ILH) under headcoach John Hao (with losses to all ILH Division I opponents). Failing to win the ILH berth into the HHSAA tournament, John Hao resigned and was replace by Darnell Arceneaux in the post season.