A new Mediterranean Revival auditorium was designed by William Horace Austin in 1930, and constructed in 1931. The Long Beach earthquake damaged the school in 1933. Following the earthquake, bricks from the damage were sold in order to pay for a memorial flagpole which still stands. In 1935, a new science building was built and the auditorium was remodeled by architect Hugh Davies. The remodeling included PWA Moderne, Streamline Moderne, and Art Deco design. A new administration building was completed the following year.