ULSA or USLS
I see it is actually "ULSA" on in-game signage so my apologies for my edit. But personally the naming seems odd - the acronym seems round the wrong way. University of San Andreas, Los Santos (USLA) makes more sense to me. Otherwise its University of San Andreas, Los Santos (USAL/ULSA) - seems a bit jumbled with the letters around the wrong way. Again, this is probably just down to personal taste but it does seem a little odd to me - but hey, the designers did it that way.