California Code, Government Code - GOV § 95026

(a) The lead agency shall maintain a system for compiling data required by the federal Office of Special Education Programs, through Part C of the federal Individuals with Disabilities Education Act, including the number of eligible infants and toddlers and their families in need of appropriate early intervention services, the number of eligible infants and toddlers and their families served, the types of services provided, and other information required by the federal Office of Special Education Programs. All participating agencies listed in Section 95012 shall assist in the development of the system and shall cooperate with the lead agency in meeting federal data requirements. The feasibility of using existing systems and including social security numbers shall be explored to facilitate data collection.

(b) Data collected pursuant to this section shall be used to improve service delivery and the quality of transition from Part C to Part B of the federal Individuals with Disabilities Education Act for children and families to the extent it is possible to do so.