Acalanes High School is a public secondary school located in Lafayette, California in the San Francisco Bay Area, within Contra Costa County. Acalanes High School was the first of what are now four high schools established in the Acalanes Union High School District. It was built in 1940 on what was then a tomato field. The school was built using Federal government funds with labor provided by the Works Project Administration, the largest and most ambitious New Deal agency introduced by the Roosevelt administration. Lafayette businessman M.H. Stanley suggested the name "Acalanes", the name of the Mexican grant from which all land title within the City of Lafayette derives. Rancho Acalanes itself seems to have been named by its Hispanic settlers after the local Native American Bay Miwok trib