I identify the effects of class size on student achievement using longitudinal variation in the population associated with each grade in 649 elementary schools. I use variation in class size driven by idiosyncratic variation in the population. I also use discrete jumps in class size that occur...

We present a method of ranking U.S. undergraduate programs based on students' revealed preferences. When a student chooses a college among those that have admitted him, that college "wins" his "tournament." Our method efficiently integrates the information from thousands of such tournaments. We...

We present a method of ranking U.S. undergraduate programs based on students' revealed preferences. When a student chooses a college among those that have admitted him, that college "wins" his "tournament." Our method efficiently integrates the information from thousands of such tournaments. We...