“…Since Minnesota adopted the first policy allowing local education agencies to provide privately-operated charter schools public funding, a large empirical literature has arisen seeking to test the effectivenss of charters in improving student performance (see Hanushek and Rivkin, 2006;Berends, 2015;Betts and Tang, 2014;Cheng et al, 2017 for reviews), and generally provides mixed evidence. 1 In recent years, as charter schools have grown in number and matured in operations, scholars have examined their effects on other aspects of the education system, including their impacts on student sorting across schools (e.g., Buckley and Schneider, 2005;Dee and Fu, 2004;Lacireno-Paquet et al, 2002;Zimmer and Guarino, 2013;Winters, 2015;Winters et al, 2017) and local teacher labor markets (e.g., Bruhn et al, 2020;Carruthers, 2012b,a;Jackson, 2012). Using updated data from North Carolina public schools, we examine the impact of recent legislative deregulation of the North Carolina charter school sector on charter expansion.…”