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NAEP Technical DocumentationParticipation, Exclusion, and Accommodation Rates for the 2010 Assessment

			Participation, Exclusion, and Accommodation Rates Grade 4 Civics Grade 4 Geography Grade 4 U.S. History Grade 8 Civics Grade 8 Geography Grade 8 U.S. History Grade 12 Civics Grade 12 Geography Grade 12 U.S. History

Participation, exclusion, and accommodation rates are presented in quality control tables for each grade and subject by geographic domain and school type. School-level response rates have been calculated according to National Center for Education Statistics (NCES) standards as they have been for previous assessments.

School-level participation rates were below 85 percent for private schools at all three grades (4, 8, and 12). Student-level participation rates were also below 85 percent for students in grade 12 public schools. As required by NCES standards, nonresponse bias analyses were conducted on each reporting group falling below the 85 percent participation rate threshold.

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