Wash. Rev. Code § 71A.12.010
It is declared to be the policy of the state to authorize the secretary to develop and coordinate state services for persons with developmental disabilities; to encourage research and staff training for state and local personnel working with persons with developmental disabilities; and to cooperate with communities to encourage the establishment and development of services to persons with developmental disabilities through locally administered and locally controlled programs.
The complexities of developmental disabilities require the services of many state departments as well as those of the community. Services should be planned and provided as a part of a continuum. A pattern of facilities and services should be established, within appropriations designated for this purpose, which is sufficiently complete to meet the needs of each person with a developmental disability regardless of age or degree of disability, and at each stage of the person's development.
RCW 71A.12.010