Welf. & Inst. Code, § 729.10

(a) Whenever, in any county specified in subdivision (b), a judge of a juvenile court or referee of a juvenile court finds a minor to be a person described in Section 602 by reason of the commission of an offense involving the unlawful possession, use, sale, or other furnishing of a controlled substance, as defined in Chapter 2 (commencing with Section 11053) of Division 10 of the Health and Safety Code, or for violating subdivision (f) of Section 647 of the Penal Code, or Section 25662 of the Business and Professions Code, the minor 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. 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.