Everyone wants to use programs that have been proven effective. But when programs are used by large numbers of schools, the effects are often inconsistent. A three-year study by the Consortium for Policy Research in Education at the University of Pennsylvania examined how programs are adapted by schools. The researchers found that the…

Firm evidence shows that formative assessment is an essential ingredient of classroom work and that its development can raise achievement standards. Achieving this goal demands a four-point scheme for teacher development: learning from development, a slow, yet steady dissemination process, reduction of obstacles, and substantive research efforts.…