The Universal Design for Learning Reporting Criteria (UDL RC) were developed as an initiative of the UDL Implementation and Research Network (UDL-IRN) Research Committee. The UDL RC, available for free download on the UDL-IRN website, are a set of guidelines that support the design and dissemination of UDL research by presenting minimal criteria for reporting on UDL components of a practice or intervention. This study sought to empirically evaluate the usability of the UDL RC by applying them to published studies to develop a shared understanding and interpretation of the criteria. Findings highlight key issues of interpretation when criteria are used in practice. Results illustrate that information on learner variability and design are often adequately addressed by the extant literature, whereas information on application and UDL-related outcomes are not as consistently reported. Implications of the UDL RC for practitioners, researchers, and editors are discussed.