A school that is more productive is one that produces higher achievement in its pupils for each dollar it spends. In this paper, I comprehensively review how school choice might affect productivity. I begin by describing the importance of school productivity, then explain the economic logic that...

I use natural population variation to identify the effects of class size and composition on student achievement. I isolate the credibly random component of population variation in each grade and school district and use this component to generate instrumental variables for class size and...