@Andy280: Yes there is a program and it is called the Intercampus visitor program
If you are a UC undergraduate in good standing, you may attend another UC campus for a quarter or a semester if space is available.
Students choose to do this for a variety of reasons, from being able to take courses that aren’t offered at their campus to getting a taste of another campus before deciding whether to transfer there.
For information about the Intercampus Visitor Program at any UC campus, contact the campus Registrar’s Office:
Berkeley
Davis
Irvine
Los Angeles
Merced
Riverside
San Diego
Santa Barbara
Santa Cruz
http://admission.universityofcalifornia.edu/campuses/beyond-campus/index.html