California Code, Government Code - GOV § 19992.10

Appointing powers shall prepare performance appraisal reports and keep them on file as prescribed by department rule.

The rules shall provide that managerial employees be shown the performance appraisal report covering their own service and are privileged to discuss it and sign it with the appointing power before it is filed.  The extent to which the reports shall be open to inspection by the public shall be prescribed by department rule.