NAEP - U.S. History 2006: Participation Rates

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Participation Rates in U.S. History

To ensure unbiased samples, participation rates for the original sample need to be at least 85 percent for schools to meet reporting requirements established by NCES and the Governing Board. Because the participation rate for grade 12 public schools was below 85 percent, an analysis was performed examining the potential for nonresponse bias introduced through school nonresponse. The results showed that school substitution and nonresponse adjustments were effective in reducing the observable nonresponse bias.

A NAEP/Governing Board reporting rule requires a 70 percent initial school participation rate in order to report data separately for public and private schools. While participation rate standards were met for public schools at all three grades, they were not met for private schools at grades 8 and 12; therefore results are only reported at grade 4. Participation rates for Catholic schools, which are included within the private category, did meet reporting standards at grades 4 and 8. Performance data for Catholic schools at grades 4 and 8 are available in the NAEP Data Explorer.

National school and student participation rates in NAEP U.S. history, by grade and type of school: 2006
Grade	Type of school	Percent before substitution	Percent after substitution	Percent before substitution	Percent after substitution	Number of schools participating after substitution	Student- weighted percent	Number of students assessed
		School participation					Student participation
		Student-weighted		School-weighted		Number of schools participating after substitution	Student- weighted percent	Number of students assessed
4	Nation	91	93	88	91	330	95	6,500
	Public	93	94	94	95	290	95	5,900
	Private	70	77	68	77	40	96	500
8	Nation	91	93	85	89	450	92	11,400
	Public	94	94	94	95	390	92	10,400
	Private	63	78	70	78	60	96	1,000
12	Nation	80	84	80	83	570	73	11,300
	Public	83	87	90	92	510	72	10,000
	Private	46	56	55	62	60	87	1,300
NOTE: The national totals for schools include Department of Defense Education Activity (overseas and domestic schools) and Bureau of Indian Affairs schools, which are not included in either the public or private totals. The national totals for students include students in these schools. The numbers of schools are rounded to the nearest ten, and the numbers of students are rounded to the nearest hundred.
SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2006 U.S. History Assessment.

The student-weighted school participation rates are calculated based on the estimated number of students represented by either the initially selected schools that participated in the assessment (before substitution) or the participating schools, whether originally selected or selected as a substitute for a school that chose not to participate (after substitution). The school-weighted school participation rates are calculated based on the estimated number of schools either before or after substitutions.

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