Depends on you resdency status.
Graduate Fees is $3,878.00 (Full-Time)
$1,288.00 (Part-Time Fees 6.0, or fewer units)
California residents pay fees but not tuition. Non-resident tuition is $339.00 per semester unit in addition to fees.
(If you attended high school in California for at least three full years and graduated or earned an equivalent, you may be eligible for resident tuition. Students must file an affidavit with the CSU campus stating that they have filed an application with Immigration to legalize their immigration status or will do so as soon as they are eligible. You will need to show proof of attendance and graduation.)