“…The No Child Left Behind Act of 2001 (NCLB) generally is regarded as the strongest U.S. federal regulation of the nation’s education policy, an area that historically has been the provenance of the 50 states. In the ensuing decade between its enactment on January 7, 2002, and the effective end of the NCLB era when the U.S. secretary of education began granting waivers from the law to states that adopted other school reform policies on February 9, 2012 (Hu, 2012; Rich, 2012), the law’s intents and effects have been both championed and criticized in the popular press (e.g., Dillon, 2006), in think-tank reports (e.g., McMurrer, 2007; Peterson & West, 2003), and in academic position papers (e.g., Beveridge, 2009; Chapman, 2004, 2007; Colwell, 2005). The scientific record also includes several evaluations of NCLB’s effect on student achievement (e.g., Dee & Jacob, 2011; Lauen & Gaddis, 2012; Lee, 2006; Lee & Reeves, 2012; Wong, Cook, & Steiner, 2009b), although the results from these are generally mixed.…”