For the purposes of this part, “children with serious emotional disturbance” means those minors under 18 years of age as described in paragraph (2) of subdivision (a) of Section 5600.3.

and Accountability Challenge Grant programs (Article 18.7 (commencing with Section 749.2) of Chapter 2 of Part 1 of Division 1), programs serving children with dual diagnosis including substance use disorders or whose emotional disturbance is related to family substance use, misuse, or disorders, and children whose families are enrolled in CalWORKs (Chapter 2 (commencing with Section 11200.5) of Part 3 of Division 9).

county shall ensure, within available resources, that programs are designed to serve young children from zero to five years of age, inclusive, their families, and adolescents in transition from 15 to 21 years of age, inclusive.