QRIS use specific quality indicators (metrics) to rate the programs in their systems. Indicators are frequently grouped together in categories that represent the dimensions of quality the QRIS assesses in the rating process. To avoid redundancy, QRIS typically build on the licensing standards in place in the state or locality. This brief, therefore, focuses on QRIS standards that exceed licensing requirements. This fact sheet describes the features of the most frequently used quality categories and indicators for the 41 QRIS. (author abstract)