Veh. Code, § 23520

(a) Whenever, in any county specified in subdivision (b), a judge of a juvenile court, a juvenile hearing officer, or referee of a juvenile court finds that a person has committed a first violation of Section 23152 or 23153, the person shall be required to participate in and successfully complete an alcohol or drug education program, or both of those programs, as designated by the court. The expense of the person’s attendance in the program shall be paid by the person’s parents or guardian so long as the person is under the age of 18 years, and shall be paid by the person thereafter. However, in approving the program, each county shall require the program to provide for the payment of the fee for the program in installments by any person who cannot afford to pay the full fee at the commencement of the program and shall require the program to provide for the waiver of the fee for any person who is indigent, as determined by criteria for indigency established by the board of supervisors. Whenever it can be done without substantial additional cost, each county shall require that the program be provided for juveniles at a separate location from, or at a different time of day than, alcohol and drug education programs for adults.

(b) This section applies only in those counties that have one or more alcohol or drug education programs certified by the county alcohol program administrator and approved by the board of supervisors.