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Home  •  Waiver & Medicaid Services  •  Innovations  •  Supports Intensity Scale (SIS)

Innovations Waiver


Supports Intensity Scale (SIS)

The Supports Intensity Scale (SIS) is a standardized test developed by the American Association of Intellectual and Developmental Disabilities. SIS assessments measure what assistance a person with I/DD needs in order to do the same things that others without disabilities do every day (i.e., shop, prepare meals, get around from place to place, work, have friendships, and participate in other daily life activities). The results of the assessment are used to guide the development of the Individual Service Plan (ISP) and to set budget amounts to be used for services.

A trained SIS interviewer performs the two- to three-hour assessment by leading a discussion using a set list of questions. The person with I/DD should also have someone with them, who knows them well, during the meeting. There are no right or wrong answers to the SIS questions; they are an opportunity to explain the person’s needs and strengths/abilities. If there is a confusing question, feel free to ask for an explanation. 

Once the SIS assessment is completed, a score is generated and shared with the person and their family. The person has the right to ask for an appeal of the score within 30 days, if there is disagreement over the results. They also have the right to request a copy of the assessment. If questions arise after 30 days, then a repeat SIS assessment can be requested.