TABLE OF CONTENTS Focal Article: The No Child Left Behind Act and Scientific Research: A View from Washington, D.C., Valerie F. Reyna. Commentaries: A Matter of Proof: Why Achievement ¿ Learning, Patricia A. Alexander and Michelle M. Riconscente. Federal Intrusion in Research and Teaching and the Medical Model Myth, Richard L. Allington. Educational Research and NCLB: A View from the Past, Robert C. Calfee. The Education Acts: Political Practice Meets Practical Problems, Scientific Processes, Process Control, and Parkinson¿s Law, Earl Hunt. Why Converging Scientific vidence Must Guide Educational Policies and Practices, G. Reid Lyon. Response to Valerie F. Reynäs The No Child Left Behind Act and Scientific Research: A View from Washington, D. C., Douglas E. Mitchell. The No Child Left Behind Act: What if it Worked?, Angela M. O¿Donnell. Educational Science: More Than Research Design, Gary D. Phye. What Role Should the Government Play in a Science of Education?, Michael Pressley....