Policymakers have long sought to raise expectations for students through standards-based reform. I examine the extent to which the Common Core State Content Standards (CC) affected student achievement and the size of achievement gaps. I merge together data on preparation for and implementation of the CC with the National Assessment of Educational…

U.S. education has experienced many waves of reform in responding to rapid changes in knowledge, technologies, and the economy. It is now widely accepted that, to succeed in the future, all young people must have the opportunity to develop critical thinking, problem-solving, collaboration, and communication competencies--often referred to as…