State and district leaders across the country are working intensely to respond to legislation calling for revised teacher evaluation systems that incorporate multiple measures of student learning and teacher practice. Whether through strengthened accountability or more formative support, the primary goal of this work is the continuous improvement…

Over the past decade, school districts and states have made impressive advances in collecting and managing data used for accountability purposes. By the year 2011, all 50 states will have systems to track students from year to year. But in most states and districts, all the data generated by these systems flows only one way: up. This paper…