Skills are a central source of high productivity and economic well-being. But what do we mean by productive skills? Both with regard to measurement and policy, the primary focus in the U.S. has been on academic skills, as measured by tests of reading, writing and math abilities and by...

A significant body of research demonstrates that teachers and the quality of their teaching are crucial components of student learning. Many teachers in resource-poor environments have limited knowledge, skills, or motivation. Some impact evaluations have shown promising results from...

This study aims at disentangling the returns to formal, non-formal and informal training and fills key knowledge gaps. Informal learning is found to be by far the most common form of job-related learning at work. Learning informally at work is found to be associated with 3.5% higher wages, on...