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Geiger, Tray; Amerein-Beardsley, Audrey – AERA Online Paper Repository, 2017
The Education Value-Added Assessment System (EVAAS), the value-added model (VAM) sold by the business analytics software company SAS Institute Inc., is advertised as offering "precise, reliable and unbiased results that go far beyond what other simplistic [value-added] models found in the market today can provide." In this study, we…
Descriptors: Value Added Models, Test Validity, Test Reliability, Teacher Evaluation
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Amrein-Beardsley, Audrey; Geiger, Tray – AERA Online Paper Repository, 2017
Contemporary teacher evaluation systems are built upon multiple measures including, primarily, teacher-level value-added and observational estimates. While researchers have conducted examinations of these systems and indicators, researchers have not investigated how using these systems might distort the validity of the inferences being drawn,…
Descriptors: Value Added Models, Computation, Teacher Evaluation, Accountability