William Taylor, 29, a third generation Washington, D.C. resident stands out for a number of reasons. For one, he is an African American man who taught math at an elementary school for many years. Taylor excelled in the role, so much so that he now coaches his fellow math teachers at Aiton Elementary School, which is located in a high-poverty…

Teachers have the greatest school-based effect on the achievement of any child in their classrooms, but highly effective principals can positively affect the achievement of every student in their schools. The difference between a highly effective principal and an average one is equal to two-to-seven months of extra learning per year for each child…

One of the most important things school systems can do to promote student achievement is to ensure that all students have effective teachers. Effective teachers may be particularly important for the most disadvantaged students. The U.S. Department of Education commissioned the American Institutes for Research (AIR) to create this report as a…