This article discusses how the Adequate Yearly Progress (AYP) accountability mechanism of No Child Left Behind makes use of supposedly objective standardized test scores to describe schools in a certain way when the very same results could serve to draw very different conclusions. Examining the proficiency scores of students from a specific middle…

Educational improvement through data-based decision-making using high-quality data is a longstanding goal of policymakers and practitioners, and ensuring the quality of the evidence available to inform such decisions is a key part of the No Child Left Behind Act of 2001. The evidence-based education that such initiatives promote involves the…