DescriptionThis study investigates the determinants of charter school enrollment using a comprehensive model of supply and demand. Research on the determinants of charter school enrollment has tended to focus solely on state policies believed to limit or support charter school growth; ignoring other determinants risks misidentifying the contributions of these policies due to omitted variables bias. In addition, prior research has tended to view charter school expansion as entirely at the expense of traditional public school enrollment—and thereby “taking funding away” from traditional public schools, when charter schools may retain some children in the public system who otherwise would attend private schools.