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Activity Number:
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94
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Type:
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Topic Contributed
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Date/Time:
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Monday, August 4, 2008 : 8:30 AM to 10:20 AM
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Sponsor:
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Social Statistics Section
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| Abstract - #301495 |
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Title:
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Test-Score Ceiling Effects and Value-Added Measures of School Quality
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Author(s):
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Cory R. Koedel*+ and Julian R. Betts
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Companies:
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University of Missouri-Columbia and University of California, San Diego
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Address:
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909 University Avenue, Columbia, MO, 65211,
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Keywords:
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value added ; school quality ; test score ceiling ; school effects
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Abstract:
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This paper uses administrative data to evaluate how test-score ceiling effects influence value-added estimation. There is no evidence of a test-score ceiling in the raw data, which is particularly appealing for this project. Starting with the no-ceiling baseline, we consider the effects of numerous artificially imposed test-score ceilings on school rankings based on value-added. Over a wide range of test-score ceiling severity, school-level value-added estimates are only negligibly influenced by ceiling effects. However, schools' value-added rankings are significantly altered by ceilings equivalent in severity to those found in minimum-competency testing environments.
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