Since each CSU campus may have different admission requirements and deadline dates for international students, contact the campus you wish to attend for their application procedures.
Usually this process includes submitting an electronic application form (international students use the same application to the CSU as all other applicants), a $70 (USD) application processing fee, proof of financial support, proof of English proficiency (TOEFL), official transcripts, and diplomas/certificates sent directly from institutions the student attended to the CSU campus in sealed envelopes (accompanied by exact literal English translations),
Additional application forms for the department to which the student is applying, letters of recommendation, portfolios, auditions, and other tests (e.g., GMAT, GRE, MAT, etc.) may also be required. Graduate applicants should check with their graduate department on the relevant CSU campus(es) for additional requirements.