ccsf officially opened in 1935, during the depression era, at the industrial school, a school for juvenile delinquents, at the ocean/phelan avenue site. instruction began on september 4, 1935, with morning classes held at the university of california extension division building on powell street and afternoon classes at galileo high school with students moving between sites using the trolley system at the time. as the student population grew, classes became available at other sites across san francisco at a variety of sites. as juila bergman writes in the book "city college of san francisco", "thus, in a real sense, the history of the college is a history of san francisco and its transportation system."