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NAEP Weighting Procedures → Weighting Procedures and Variance Estimation for the 2000 National Main Assessment → Reporting Weights Main → Initial Student Weight for the 2000 National Main Assessment → Year-Round School Adjustment for the 2000 National Main Assessment

NAEP Technical DocumentationYear-Round School Adjustment for the 2000 National Main Assessment

The year-round adjustment factor applies only to students in year-round schools. In year-round schools, only a portion of the total student body is in school at any given point in time. The year-round adjustment factor inflates the weight to account for students that were on break at the time of student sampling. It is calculated as

where PCT_OFF is the percentage of students that were on break at the time of student sampling. Students not in year-round schools are assigned the year-round adjustment factor of 1.0.

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