Policymakers and school administrators have embraced value-added models of teacher effectiveness as tools for educational improvement. Teacher value-added estimates may be viewed as complicated scores. This Paper examines the use of value-added modeling as a tool to identify effective teachers from ineffective instructors.
Haertel, E. H. (2013). Reliability and Validity of Inferences about Teachers Based on Student Scores. William H. Angoff Memorial Lecture Series. Educational Testing Service.