Research finds that small high schools deliver better outcomes than large high schools for urban students. An important outstanding question is whether this better performance is gained at the expense of losses elsewhere: Does small school reform lift the whole district? We explore New York City's small high school reform in which hundreds of new…

A series of policy shifts over the past decade promises to change how Americans decide where to send their children to school. In theory, the expanded use of standardized test scores and the boom in charter schools will allow parents to evaluate their assigned neighborhood school, or move in search of a better option. But what kind of data do…