A descriptor for assessments used as a source of evidence for CAEP standards that are created and/or administered by states, research organizations, or commercial test organizations. Typically, information about the design of the assessments, and their validation, scoring, and other attributes, is available from sponsors online or in response to requests from EPPs or states. CAEP distinguishes proprietary assessments from EPP-created assessments in which the EPP takes responsibility for design, administration, and validation.