Pleasant Hill High School is a public high school located in Pleasant Hill, Missouri, United States. PHHS serves students in grades 9 through 12 and is the only high school in the Pleasant Hill R-III School District.
Pleasant Hill High School was established in 1923. Voters passed a $90,000 bond in spring to authorize the building of a 300-student high school, which was completed that fall.
Rooster and Chick athletic teams compete in the Missouri River Valley Conference.
PHHS has four competitive show choirs: the mixed-gender "Hillside Singers" and "Hillsound", the all-female "Hilltop Harmony" and the all-male "Powerhouse". Hillside Singers' 2020 season included four grand championships. The program also hosts an annual competition, the Battle of the Best.