NAEP Sample Design - Weighted School and Student Participation Rates, by Grade, Reporting Population, and Subject Area, National Main Assessment: 2000

Weighted school and student participation rates, by grade, reporting population, and subject area, national main assessment: 2000
Subject area	Grade	Reporting population	School participation		Student participation	Overall participation
Subject area	Grade	Reporting population	Before substitution	After substitution	Student participation	Overall participation
Mathematics	4	R2	85.4	88.7	95.6	84.8
	4	R3	85.4	88.7	95.5	84.7
	8	R2	82.8	85.5	92.2	78.8
	8	R3	82.8	85.5	91.7	78.4
	12	R2	78.2	82.4	76.6	63.2
	12	R3	78.2	82.4	77.2	63.6
Reading	4	R2	84.3	87.4	95.7	83.6
Reading	4	R3	84.3	87.4	95.8	83.7
Science	4	R2	84.7	88.4	95.7	84.6
	4	R3	84.7	88.4	95.6	84.5
	8	R2	82.4	85.2	92.0	78.4
	8	R3	82.4	85.2	91.9	78.3
	12	R2	77.4	81.9	75.9	62.2
	12	R3	77.4	81.9	75.9	62.2
SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2000.