If you are an out-of-state student and U.S. citizen, permanent resident, or hold a particular visa you can apply for Californian residency prior to the second year of the program, thereby saving you the cost of the out-of-state tuition in your second year.
For more information about UC Berkeley's most recent residency policies, please review the Residency Requirments for Graduate Students or contact the Office Of the Registrar, Residence Affairs at orres@berkeley.edu. Detailed information about applying for residency (for tuition purposes) can also be found on the Registrar's website HERE.