Cal. Educ. Code § 56441.2

An early education program for individuals with exceptional needs between the ages of three and five, inclusive, shall include specially designed services to meet the unique needs of preschool children and their families. To meet this purpose, the program focus is on the young child and his or her family and shall include both individual and small group services which shall be available in a variety of typical age-appropriate environments for young children, including the home, and shall include opportunities for active parent involvement.