San Diego Academy had its beginnings in 1899 when W. M. Healey, pastor of the Adventist church, rented a store at 17th and K Streets. Seventeen students began their Christian education with Robert Sanders and his wife serving as teachers.The school functioned as an elementary school and then a junior academy until 1930 when it became a full 12-grade school. After a series of moves, the school was located adjacent to Paradise Valley Hospital in 1947. Construction on the new sight, just east of the old one, began in 2002. The new facility was completed and classes began in 2800 East 4th Street facility during August 2005.