Finds that early intervention services are cost-effective and effectively serve the developmental needs of infants and toddlers with disabilities and developmental delays and their families.

Provides a comprehensive, coordinated, interagency, interdisciplinary early intervention services system for all eligible infants and toddlers and their families to enhance the capacity to equitably provide quality early intervention services, and to facilitate coordination of payments for early intervention services from various public and private sources.

Requires the department of social and health services to, in accordance with RCW 71A.14.030 and in coordination with other funding sources for early intervention services, contract with each county governing authority to provide funding for early intervention services to all eligible children with disabilities from birth to three years of age who have been identified as needing services.

Directs all public early intervention funding sources to assure that services are provided in accordance with the requirements of Part C and the Washington state federally approved plan.

Takes effect July 1, 2011.