CA Veh Code Section 2572

(a)

The commissioner may adopt whatever regulations are necessary to administer this chapter. The regulations shall be consistent with regulations regarding schoolbuses and schoolbus drivers adopted by the commissioner pursuant to other provisions of law.

(b)

In addition to any other requirements, it is unlawful for the private schoolbus contractor or the person who directs the driver to operate a vehicle transporting school pupils, when that transportation requires a license, to knowingly cause the operation of the vehicle unless the private schoolbus contractor holds a valid license for the transportation of school pupils. A violation of this subdivision shall be punished by a fine of not more than two thousand dollars ($2,000).