How Does a Value-Added Model Compare to the Colorado Growth Model?
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How Does a Value-Added Model Compare to the Colorado Growth Model?

Working Paper 22
Published: Oct 30, 2013
Publisher: Washington, DC: Mathematica Policy Research
Human Services Education Strengthening and Disseminating Research Labor: Strengthening and Disseminating Research
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Associated Project

Value-Added Assessment System for DC Schools and Teachers

Time frame: 2009-2015

Prepared for:

District of Columbia Public Schools

Authors

Elias Walsh

Eric Isenberg

This working paper compares teacher evaluation scores from a typical value-added model with results from the Colorado Growth Model (CGM) and finds that use of the CGM in place of a value-added model depresses the evaluation scores for teachers with more English language learner students and increases the evaluation scores for teachers of low-achieving students.

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