As state and local education agencies increasingly focus on serving educators with their data systems, a common challenge has arisen: identifying the critical knowledge, skills, and behaviors needed by teachers and administrators to use data effectively. Many states are creating data literacy and data use training programs for pre- and in-service educators without a common foundation on which to base the content. In addition, several state education agencies and educator preparation programs have begun communicating about how to create a stronger alignment between pre- and in-service training for educators regarding data use. The objective of this resource is: (1) To provide a foundation for states' development of data literacy and data use trainings; and (2) To inform and improve the articulation between pre- and in-service data training for teachers and administrators. This resource contains three case studies that illustrate the essential knowledge, skills, and professional behaviors necessary to use data effectively being applied by educators in real-world settings. It is a companion publication to "SLDS Data Use Standards: Knowledge, Skills, and Professional Behaviors for Effective Data Use." Specific standards from that publication are illustrated in these case studies and referenced in parentheses. [For "SLDS Data Use Standards: Knowledge, Skills, and Professional Behaviors for Effective Data Use," see ED595040.]