Southwest Senior High (SOH), in San Diego, California, United States, is a high school established in 1975. Part of the Sweetwater Union High School District, it serves all socioeconomic communities of San Diego, as well as some students living in Chula Vista, Imperial Beach and San Ysidro. The school serves approximately 1,750 students. The school has a rivalry with fellow Sweetwater Union High School District school, Mar Vista, most notably the annual Battle of the Bell football game.