Finds an urgent and substantial need to enhance the development of all infants and toddlers with disabilities in Washington in order to minimize developmental delays and to maximize individual potential for learning and functioning.

Requires that, by September 1, 2009, each school district shall provide or contract for early intervention services to all eligible children with disabilities from birth to three years of age. Eligibility shall be determined according to Part C of the federal individuals with disabilities education act and as specified in the Washington Administrative Code.

Provides that school districts shall provide or contract for early intervention services in partnership with local birth-to-three lead agencies and birth-to-three providers. Services provided under this act shall not supplant services or funding currently provided in the state for early intervention services to eligible children with disabilities from birth to three years of age. The state-designated birth-to-three lead agency shall be payor of last resort for birth-to-three early intervention services provided under this act.

Declares that the services in this act are not part of the state's program of basic education pursuant to Article IX of the state Constitution.