Several cohorts from Washington State’s Department of Children, Youth and Families child care Risk Assessment Licensing Decision Making Tiers System (RALDMTS) were used to validate their risk assessment rules. The validation involves two key components: 1) Validation of the measurement strategy used to determine the licensing decision making for child care centers and family child care homes; 2) Validation of the licensing system in juxtaposition to the program quality measures (ERS & CLASS) as part of their QRIS – Quality Rating and Improvement System utilized in Washington. (author abstract)