Rethinking Value-Added Models in Education : Critical Perspectives on Tests and Assessment-Based Accountability

Since passage of the of No Child Left Behind Act in 2001, academic researchers, econometricians, and statisticians have been exploring various analytical methods of documenting students‘ academic progress over time. Known as value-added models (VAMs), these methods are meant to measure the value a teacher or school adds to student learning from one year to the next. To date, however, there is very little evidence to support the trustworthiness of these models. What is becoming increasingly evident, yet often ignored mainly by policymakers, is that VAMs are 1) unreliable, 2) invalid, 3) nontransparent, 4) unfair, 5) fraught with measurement errors and 6) being inappropriately used to make consequential decisions regarding such things as teacher pay, retention, and termination. Unfortunately, their unintended consequences are not fully recognized at this point either. Given such, the timeliness of this well-researched and thoughtful book cannot be overstated. This book sheds important light on the debate surrounding VAMs and thereby offers states and practitioners a highly important resource from which they can move forward in more research-based ways.

Audrey Amrein-Beardsley, Ph.D., is currently an Associate Professor in Mary Lou Fulton Teachers College at Arizona State University. She is one of the top Edu-Scholars in the nation, honored for being an academic who is contributing substantially to public debates about the nation's educational system. She is also creator and host of the blog: VAMboozled! (vamboozled.com).