Construction of the first permanent building to house a high school in Balboa was completed in 1917. What came to be Balboa High School was not started until 1942 and completed through additions in 1948, 1949, 1963 and 1969. Prior to that, the high school was located in part of Bldg. 710, known for most of its history as Balboa Elementary School and in a temporary wooden building for several years. Starting in 1966, a junior high school was opened in Curundu to accommodate the overcrowding at Diablo Junior High School.