 The California State University (CSU) system describes itself as the largest four-year public university system in the United States.The CSU was originally intended to accept students from the top one-third (1/3rd) of California high school graduates, however several of the schools in the CSU system have become much more selective.Many of the larger campuses, such as Cal Poly, Cal Poly Pomona, Long Beach State, Cal State Fullerton, Cal State San Bernardino, Fresno State, Sacramento State, San Francisco State, San Diego State, and San José State (the oldest public university in California) have become more research oriented than they were in the past.