Section 388-828-4000. What is the supports intensity scale (SIS) assessment?  


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  • The supports intensity scale assessment is a standardized tool developed by the American Association on Intellectual and Developmental Disabilities (AAIDD), to measure the relative intensity of support needs for persons age sixteen and older.
    [Statutory Authority: RCW 71A.12.030 and Title 71A RCW. WSR 07-10-029, § 388-828-4000, filed 4/23/07, effective 6/1/07.]
RCW 71A.12.030 and Title 71A RCW. WSR 07-10-029, § 388-828-4000, filed 4/23/07, effective 6/1/07.