Assessing Aircraft Noise Conditions Affecting Student Learning, Volume 2: Appendices (2014) / Chapter Skim
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APPENDIX F Adjustments to Test Scores F.1.
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TABLE F-1 Aggregate Regression Coefficients for Covariates Used in the Study. Test Free Lunch Eligible Minority Pupil Teacher Ratio Enrollment per Grade R Squared Grade 3 Reading -1.841 -0.943 -0.07 0.015 0.576 Grade 4 Reading -1.285 -1.332 0.04 0.007 0.532 Grade 5 Reading -1.778 -1.003 -0.07 0.005 0.592 Grade 3 Math -1.590 -1.085 -0.18 0.026 0.515 Grade 4 Math -1.560 -1.098 -0.13 0.018 0.504 Grade 5 Math -1.528 -1.059 -0.14 0.012 0.508 .
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From page 125... ...
F.2. Use of Weighted Averages The reliability of school test score averages is strongly related to the number of students tested, so the next step in the test score file preparation was to incorporate the number of students tested in each subject, grade, and year for which a test score was included.
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From page 126... ...
and resource variation. A final step in preparing for the analysis was to test whether schools exposed to airport noise could be compared to all other schools in the same state or whether that comparison should only involve other schools in the same district.
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50,000 control schools in the study, there were about 5,000 control schools to be compared to the roughly 1,000 schools exposed to airport noise. This has virtually no impact on the precision of the comparisons, which is largely determined by the smaller of the two sample sizes, that is, by the number of schools exposed to airport noise.
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TABLE F-4 Number of Schools and Districts Included in the Main Analyses for Each Grade and Subject. Test Score Districts Exposed Schools Control Schools Both*
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TABLE F-5 Design Effects Resulting from Cross-Year Correlations of School-Level Test Scores. Score Type Design Effect Reading Grade 3 1.665 Reading Grade 4 1.592 Reading Grade 5 1.546 Math Grade 3 1.600 Math Grade 4 1.625 Math Grade 5 1.595 F-7
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