Why, when so many educational interventions demonstrate positive impact in tightly controlled efficacy trials, are null results common in follow-up effectiveness trials? Using case studies from literacy, this article suggests that replication failure can surface hidden moderators--contextual differences between an efficacy and an effectiveness…

This article describes elements of an approach to research and development called "design-based implementation research." The approach represents an expansion of design research, which typically focuses on classrooms, to include development and testing of innovations that foster alignment and coordination of supports for improving…

Reports on the lack of attention being paid by educational policymakers to leadership preparation programs and explores issues in creating better leaders with the skills to create effective learning environments. Discusses leadership skills and characteristics required for school reform, the development of better leadership preparation programs,…