Declo High School draws students from the cities of Declo and Albion as well as the unincorporated communities of Springdale, View and Unity to the west, Raft River to the east and Jackson to the north.

Originally the schools colors were green and white, but were changed to its present orange and black in the 1930s.

It currently competes in the Canyon Conference within District IV against Wendell High Schools.

It competes in men's and women's basketball, volleyball, wrestling, football, softball, golf, cross country and track and field.

The cross country team's shirts in 2011-2012 said "Life is Short, Running Makes it Seem Longer."