It is located near the intersection of Spring Street and Palo Verde Avenue in the Los Altos neighborhood of East Long Beach on a 36-acre campus.

The choral program consists of six courses: Choraleers Singers 1–2 which is a freshman girls class; Varsity Chorale 1–8, a freshman boys class; Cecillian Singers 3–8, an intermediate girls class; Concert Choir 1–8, a large, advanced, Co-Ed group of vocalists consisting of 100 singers; Vocal Point, a jazz and a cappella female group, sung on microphone; and Vocal Ensemble, the Co-Ed equivalent of Vocal Point.

Each year the music ensembles compete in festivals throughout the United States.

Millikan teams include Cross Country, Tennis, Badminton, Water Polo, Dance, Football, Colorguard, Golf, Surf, Marching Band, Basketball, Volleyball, Beach Volleyball, Soccer, Wrestling, Baseball, Gymnastics, Swim, Softball, Track, Water polo, Lacrosse, and Cheer [3] Some sports are co-ed while others are not.

2018 marked the first year for a female to score a point for the Millikan Rams varsity football.