Five years into the Common Core initiative, researchers and the general public are interested to know whether and how the standards are "working." In this introduction to the special topic, I discuss the state of the literature on these questions and offer suggestions for what I view as the most important work moving forward.

Illinois advanced landmark reforms in recent years to improve instruction for its 2 million students. Built upon the bedrock of new, rigorous Common Core State Standards, Illinois education leaders stepped up student expectations, championed educator evaluations intended to provide feedback and improve instruction, redesigned school report cards…

With states and districts across the country implementing the Common Core State Standards, teachers have more opportunities than ever to collaborate around the shared goals of strengthening curriculum design, classroom practices, and student learning. Building from this premise, the Common Assignment Study (CAS) has brought together teams of…

In spite of Tea Party criticism, union skepticism, and anti-testing outcries, the campaign to implement Common Core State Standards (otherwise known as Common Core) has achieved phenomenal success in statehouses across the country. Since 2011, 45 states have raised their standards for student proficiency in reading and math, with the greatest…

By combining an overall vision for the use of data, a commitment to protecting student privacy and data integrity, and supportive legislation, Georgia emerged as a leader in the effective use of student data. But it easily could have gone another way. None of the three elements could be taken for granted when Georgia set out to develop its state…

The Instructional Leadership Corps (ILC) is an innovative professional learning project in which teacher leaders in California collaborate to lead sustainable professional development to support implementation of new student standards within their districts. Over more than 4 years, the ILC has served over 100,000 teachers. The responses of these…

Education Funders Research Initiative (EdFunders), a project of Philanthropy New York, is supported by a group of diverse funding organizations that have pursued an array of education reform strategies. EdFunders have come together to engage New Yorkers and focus leaders on new research into how to best prepare students for college and…