Please note: This is a Sole Source Notification. CCSSO is a nonpartisan, nationwide nonprofit organization composed of public officials who lead departments of elementary and secondary education across the United States, the District of Columbia, the Department of Defense Education Activity, and five US extra-state jurisdictions. CCSSO leads and facilitates collective state action to transform the public education system in the four strategic areas: Educator Workforce; Information Systems and Research; Next Generation Learners; and Standards, Assessment, and Accountability. MDE has determined that membership in CCSSO is the only commercially reasonably available commodity product to meet these needs. This is deemed a single source purchase because CCSSO membership is solely distributed and supported by CCSSO itself and is not available from other third parties.