States and school districts are exploring alternatives to state tests for measuring teachers' contributions to student learning. One approach applies statistical value-added methods to alternative student assessments such as commercially available tests and end-of course tests. The evidence suggests that these methods can reliably distinguish…

Since the passage of the No Child Left Behind Act of 2001 (2002), there has been increased interest in using student achievement data (through standardized tests) to evaluate teacher effectiveness. Two U.S. Department of Education secretaries, Secretary Spellings and Secretary Duncan, have expressed interest in growth models and the need to…

Now that all 50 states and the District of Columbia are building statewide longitudinal data systems, the next step is to ensure that the information in these systems is used to improve student learning. The Data Quality Campaign (DQC) has identified 10 actions that states can take to ensure that the right data are available and accessible and…