There aren't many parties on campus, as the security is very strict and many students fear getting written up for drinking (as they do not want to lose their housing). There is a pub located underground on campus for older students, but it closes early. Unlike what many may hear, the fact that San Francisco State is a commuter school does not ruin the nightlife. Parties occur almost every night within the townhomes and tower flats of Parkmerced, the closest apartment complex to SFSU. And for those involved in Greek life on campus, usually they hold frequent parties all over the city.
Downtown San Francisco is littered with many 18-and-up clubs, and many concert venues, such as the Fillmore, the Warfield, and hundreds more. Don't worry about not having a good time in the darkness of the city. Lots of restaurants stay open late into the next morning, and a student can always find a dive bar to call home. A popular side job for 21-and-up students is a go-go dancer or promo girl, which may involve dancing on stage or handing out trial alcohol at clubs.