Hanushek coauthors study concerning individual principals’ contributions to growth in student achievement

Although it is widely believed that good school principals have a positive impact on student achievement, little systematic research has been done to date on the effect of strong school leadership. Now a new study finds that highly effective principals raise the achievement of a typical student in their schools by between 0.05 and 0.21 standard deviations, the equivalent of between two and seven months of additional learning each school year. Click here to read why and how “School Leaders Matter.”