This paper proposes a regularisation method for the estimation of large covariance matrices that uses insights from the multiple testing (MT) literature. The approach tests the statistical significance of individual pair-wise correlations and sets to zero those elements that are not...

Canonical human capital theories posit that education, by enhancing worker skills, reduces the likelihood that a worker will be laid-off during times of economic change. Yet, this has not been demonstrated causally. We link administrative education records from 1987 through 2002 to nationally...

Recent studies document that, in many cases, the schools that parents prefer over others do not improve student test scores. This could be because (a) parents cannot discern schools causal impacts, and/or (b) parents value schools that improve outcomes not well-measured by test scores. To shed...

Low salaries, a limited amount of full-time teaching positions, and alternative systems of allocating teaching hours lead teachers to look for additional jobs in other schools. Although this is a more common phenomenon of teacher labor markets in developing countries, teachers who teach specific...

The 2010 primary school reform in the UK aimed at giving schools more autonomy and freedom from local council's control, by giving them the option to become academies. Once converted, schools need to choose between remaining a standalone academy or joining an academy chain. However, the majority...

We study the impact on learning of a child's rank in the classroom using a unique experiment from Ecuador. Within each school, students were randomly assigned to classrooms in every grade between kindergarten and 6th grade.Therefore, two students with the same ability can have different...

It is unclear whether teachers with a degree in education are more effective than those who are not trained in an education-related field. To further examine this issue, we analyze the relationship between teachers' college major and student achievement by using unique data from Ecuador, which,...

We evaluate the effects of a 10-week intervention that randomly provided access to remote coaching to parents of preschool children over the summer break in Peru. In response to learning losses during school closures induced by COVID-19, education coaches offered guidance and encouragement to...

Play during early childhood is key to stimulating children's physical, social, emotional, and cognitive development. However, research on play-based learning is largely limited to high-income countries, and little is known about the use of hybrid interventions (which combine in-person and remote...