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Washington Offender Needs Evaluation: Review and Examination of Reassessments

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Lauren Knoth-Peterson, Michael Hirsch - December 2021

In December 2017, the Washington State Department of Corrections (DOC) implemented a new dynamic risk and needs assessment—the Washington Offender Needs Evaluation (Washington ONE). The Washington ONE is a dynamic risk and needs assessment used to inform case management for individuals under DOC jurisdiction.

The DOC contracted with WSIPP to review the literature on correctional risk assessments, including hierarchical classification systems. In addition, DOC asked WSIPP to examine the impact of reassessments on risk level classification changes since the instrument was introduced in 2017.

Our review of the literature found that the Washington ONE is generally consistent with national standards on the types of factors considered in the assessment. However, the hierarchical methods used to determine classifications are unique to Washington State. To date, information on the comparative accuracy of the Washington ONE is unavailable, but the report provides an overview of the national standards for reviewing accuracy and fairness in risk assessment instruments.

In general, most reassessments under the Washington ONE did not lead to a change in risk level classification (RLC). When reassessments did lead to a change, there were increases and decreases in RLC. Changes in RLC were driven by changes in many different domains. The report provides details about changes in RLC following reassessments by gender and by race.

Report ID: 21-12-1902

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