Value-Added Modeling 101

Using Student Test Scores to Help Measure Teaching Effectiveness

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Value-added models attempt to measure a teacher's impact on student achievement while controlling for other factors that affect achievement, such as individual ability, family environment, past schooling, and the influence of peers. There are many value-added modeling approaches used in practice, and all control for students' prior achievement with the goal of facilitating apples-to-apples comparisons among teachers.

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