The new Every Student Succeeds Act offers states flexibility to create new approaches to school accountability and to design appropriate interventions for schools in need of assistance. The law states that the interventions should be "evidence-based" and defines the kinds of research evidence states need to provide when choosing…

Developing excellent principals who can set direction, develop people, redesign organizations, and lead instruction requires a system of high-quality preparation and professional development. This paper summarizes the elements of high-quality principal preparation and professional development programs that have been associated with positive school…