Pretrial services: Contra Costa validates pretrial risk tool as caseloads rise after Prop 36

May 20, 2025

Probation presented a validation of the county's public safety assessment, found strong predictive performance with no detectable bias, and reported pretrial assessments nearly doubled year over year amid higher referrals since Proposition 36.

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Contra Costa County probation officials told the Board of Supervisors on May 20 that the county-validated pretrial public safety assessment (PSA) performs well and shows no detectable racial or gender bias, even as the department is seeing a sharp increase in pretrial workload following voter-approved criminal justice changes.

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