This chapter argues that the format of the communication and style of the text should follow the recommendations provided for other formal candidate communications. The recipients must actually understand and act on much of the information credentialing bodies are trying to communicate. Credentialing bodies may find it beneficial to communicate the performance of groups of candidates to their stakeholders. In fact, some credentialing organizations may find it necessary to report the performance of the group of candidates within each governmental jurisdiction. Communication with candidates and other stakeholders is so critical that the new AERA, APA, and NCME Standards for Educational and Psychological Testing references it explicitly and repeatedly, using strong language. The chapter explores the design and development of test results reports. It addresses test results report content, providing test results reports, and helping with interpretation.