The trend of American students living off campus had emerged during the post-World War II era. The Servicemen's Readjustment Act legislation, popularly known as the "G.I. Bill", provided large numbers of returning veterans with the financial aid to pursue college degrees. Many veterans were older than traditional students or had families to support; this further spurred the growth of off-campus housing. It was estimated that by century's end, as many as 85% of American college students lived off campus (Carnegie Commission). This residential trend – and other factors – would mitigate the division between town and gown (but not necessarily the tensions). Universities increasingly integrated into cities as cities absorbed and accommodated universities. Commuter colleges, such as San Francisco State University, now enroll large numbers of students who live at a distance, commute to campus for classes, and then leave at the end of each school day. Concurrently, American universities have opened branch campuses and even offer classes in storefront venues.