California Code, Vehicle Code - VEH § 11215.5

(a) If the main business office of the traffic violator school is located in any county with a population of 400,000 or more in which the traffic violator school conducts its instructional program, and the main business office does not maintain office hours during the time that the day courts in that county are open for business.  This subdivision shall not apply to public schools.

(b) If the licensee is found by the department to be selling, or knowingly permitting the sale of, completion certificates.

(c) If the licensee is found by the department to be intentionally cutting instructional time short.

(d) If the licensee is found by the department to be intentionally diverting any student to a traffic school other than the school initially contacted by that student, without disclosure to that student, through the use of the department's list of licensed traffic violator schools.