We provide the first evidence that cumulative heat exposure inhibits cognitive skill development and that school air conditioning can mitigate this effect. Student fixed effects models using 10 million PSAT-takers show that hotter school days in the year prior to the test reduce learning, with...

Though online technology has generated excitement about its potential to increase access to education, most research has focused on comparing student performance across online and in-person formats. We provide the first evidence that online education affects the number of people pursuing...

The Federal government has spent billions of dollars to support turnarounds of low-achieving schools, yet most evidence on the impact of such turnarounds comes from high-profile, exceptional settings and not from examples driven by state policy decisions at scale. In this paper, we study the...

Advanced math coursework can affect college and labor market outcomes, yet discretionary placement policies can lead to differential access at key points in the college preparatory pipeline. We examine a targeted approach to course assignment that uses prior test scores to identify middle school...

Does access to four-year colleges affect degree completion for students who would otherwise attend two-year colleges? Admission to Georgia's four-year public sector requires minimum SAT scores. Regression discontinuity estimates show that access to this sector increases four-year college...

We study an intensive math instruction policy that assigned low-skilled 9th graders to an algebra course that doubled instructional time, altered peer composition and emphasized problem solving skills. A regression discontinuity design shows substantial positive impacts of double-dose algebra on...

Left- and right-handed individuals have different neurological wiring, particularly with regard to language processing. Multiple datasets from the United States and the United Kingdom show that lefties exhibit significant human capital deficits relative to righties. Lefties score 0.1 standard...

Most states now fund merit-based financial aid programs, the effects of which depend on how strongly students react to changes in college costs. I estimate such reactions using quasi-experimental aspects of a recent Massachusetts merit scholarship program intended to attract talented students to...

The majority of states in the U.S. now fund merit-based financial aid programs, the effects of which depend on how strongly students react to changes in college costs. I estimate such reactions using quasi-experimental aspects of a recent Massachusetts merit scholarship program intended to...