Among all in-school factors that impact student learning, teachers carry the most weight -- but school leaders are not far behind. Decades of research have proven the positive influence principals can have on student achievement, school climate and teaching quality. New evidence suggests that their impact may be even greater than previously…

Identifying whether suicides in a region are due to characteristics of the residents living there or to some enduring feature of the region is difficult when using cross-sectional studies. To distinguish these factors, we compared the suicides of a region's residents with people who were temporarily visiting the region. Using U.S. death records…