The Common Core State Standards (CCSS) are part of a third wave of school reform in the United States. With accompanying tests, these standards combine calls for increased academic rigor, beginning in the 1980s, with more recent efforts to hold schools, teachers, and students accountable for learning outcomes in publicly funded schools. Origins of CCSS can be traced to the 1996 National Education Summit where the National Governors Association (NGA), philanthropic foundations, and business leaders founded Achieve to broker rigorous high school graduation requirements. In 2009, Achieve became the project manager for the construction of CCSS. In 2010, implementation began with incentives from the Obama administration and funding from the Gates Foundation. Advocates choose among a variety of rationales: faltering American economic competitiveness, wide variability among state standards and educational outcomes, highly mobile student populations, and/or a growing income achievement gap. Critics cite federal intrusion in states’ rights, a lack of an evidentiary base, an autocratic process of CCSS production, and/or a mis-framing of problems facing public schools. With the reauthorization of the Elementary and Secondary Education Act (ESEA) as the Every Student Succeeds Act of 2015, federal advocacy of CCSS ended officially.