El Capitan High School (commonly known as El Cap) is a public high school in Lakeside, California, United States, a census-designated place in San Diego, and serves students in grades nine through twelve.

[6] In September 2018, construction began on an $11 million event center that included an event space, lobby and concession areas, band room, practice room, dance studio, and drama classroom.

[11] In 2014, the varsity football team enjoyed its best performance in school history.

After an upset victory against Helix High School, a Division I team, El Capitan finished the regular season undefeated at 10–0.

[13] In 2016, the girls varsity volleyball team finished the season 25–5 and won its first San Diego Section Division III championship.