Open-enrollment policies allow students to transfer from one public school to another of their choice. While open-enrollment policies involve students transferring to another school or district, the specifics of these policies vary significantly across states. States' open-enrollment policies may allow for voluntary or mandatory participation at the district level, and they can also allow for intradistrict transfer, interdistrict transfer, or both. This policy analysis provides an overview of open-enrollment policies across the country, as well as a 2016 state-by-state legislative update.