Many studies examine the importance of teachers in students' learning, but few exist on the contribution of principals. We measure the effect of principals on gains in primary test scores in North Carolina and estimate the standard deviation of principals' value added to be 0.12 -0.17. We find...

Using 10-year neighborhood-level panels derived from personal tax records in Canada, we find that local ethnic and religious diversity are inversely related to charitable donations. A 10 percentage point increase in ethnic diversity is associated with a 14% reduction in donations. The same...

Do households react to changes in the distribution of income in their localities by changing their charitable giving? The theoretical prediction of the effects of income inequality on giving is unclear. We study how changes in income inequality measured at the neighbourhood and municipality...

Many studies examine the importance of teachers in students' learning, but few exist on the contribution of principals. We measure the effect of principals on gains in primary test scores in North Carolina and estimate the standard deviation of principals' value added to be 0.12 -0.17. We find...

As school leaders, principals can influence student achievement in a number of ways, such as: hiring and firing teachers, monitoring instruction, and maintaining student discipline, among others. We measure the effect of individual principals on gains in student math and reading achievement...

We explore the effects of local ethnic and religious diversity on private donations to charity. We find that an increase in religious or ethnic diversity decreases donations. The ethnicity effect is driven by non-minorities and blacks, and is strongest in high income, low education areas. The...

It is common to model costs of carrying out strategies in games in relation to the complexity, in some sense, of the strategies. We show a particularly general definition of complexity for this purpose, one that subsumes many alternatives as special cases. We explore how this definition can be...

We explore the effects of local ethnic and religious diversity on individual donations to private charities. Using 10-year neighborhood-level panels derived from personal tax records in Canada, we find that diversity has a detrimental effect on charitable donations. A 10 percentage point...

We investigate short and long-term effects of early childhood education using variation created by a unique policy experiment in British Columbia, Canada. Our findings imply starting Kindergarten one year late substantially reduces the probability of repeating the third grade, and meaningfully...

Many studies examine the importance of teachers in students' learning, but few exist on the contribution of principals. We measure the effect of principals on gains in primary test scores in North Carolina and estimate the standard deviation of principals' value added to be 0.12 -0.17. We find...