Exterior scenes for the fictional Beverly Hills High School [where Brandon and Brenda attended] were shot at Torrance High (at 2200 W. Carson Street) in Torrance, CA. The campus of Occidental College were used as the backdrop for the campus of "California University" when the 90210 gang entered college. Occidental College is located between Pasadena and Glendale (at 1600 Campus Road), in the L.A. suburb of Eagle Rock.
Movie Locations, Schools - Primary & Secondary
Links: en.wikipedia.org, www.oxy.edu, en.wikipedia.org