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Document Number: 10914

Combining Multiple Performance Measures: Do Common Approaches Undermine Districts' Personnel Evaluation Systems? - Identifying high and low performers in teaching and school leadership is difficult. Researchers used simulations to test three commonly used systems to evaluate teachers and principals and conclude the numeric model is the preferred approach. The hybrid and profile models introduce a bias favoring teachers. Authors recommend states and districts clearly articulate the evaluation system's target criterion and understand how the adopted performance measures predict that target criterion. (Michael Hansen, Mariann Lemke and Nicholas Sorensen, American Institutes for Research, August 2013)...

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