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NAEP Sample Design → NAEP 2002 Sample Design → 2002 National Main Assessment Sample Design → School Participation in the 2002 National Main Assessment → Weighted Counts of NAEP 2002 Eligible Sample Public Schools by Response Status, Twelfth Grade

NAEP Technical DocumentationWeighted Counts of NAEP 2002 Eligible Sample Public Schools by Response Status, Twelfth Grade

The following table presents student-weighted aggregations and response rates for eligible twelfth-grade public schools, for nonresponding and responding originally sampled schools. Weighted aggregations for each set of schools were calculated by dividing the frame enrollment by the school probability of selection. The student-weighted aggregations for the eligible schools for each jurisdiction offer an estimate of the total population of students in the grade within each jurisdiction.

Student-weighted school counts and response rates, grade 12 national main assessment, by NAEP region: 2002

NAEP region	Eligible school sample, weighted aggregation	Nonresponding originally sampled schools, weighted aggregation	Responding originally sampled schools, weighted aggregation	Weighted response rate (percent)
Total	2,690,000	643,000	2,050,000	76.1
Northeast	526,000	117,000	409,000	77.8
Southeast	608,000	30,300	578,000	95.0
Central	666,000	224,000	442,000	66.4
West	889,000	272,000	617,000	69.5
NOTE: Detail may not sum to totals because of rounding. SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2002.

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