California Code, Vehicle Code - VEH § 11210

Pending determination by the department that an applicant for a license fully satisfies the requirements of this chapter, the department may issue a temporary permit to the applicant.  A temporary permit may authorize the operation of a traffic violator school or acting as a traffic violator school operator or traffic violator school instructor for a period not to exceed 120 days while the department is completing its investigation and determination of all facts relative to the qualifications of the applicant for the license.

The department may cancel a temporary permit when it has determined or has reasonable cause to believe that the application is incorrect or incomplete or the temporary permit was issued in error.  A temporary permit is invalid upon cancellation or once the applicant has been issued or denied the license applied for.