NAEP Assessment Weighting Procedures → Weighting Procedures for the 2011 Assessment → Quality Control on Weighting Procedures for the 2011 Assessment → Main Quality Control Findings of Interest for the 2011 Assessment

NAEP Technical DocumentationMain Quality Control Findings of Interest for the 2011 Assessment

			Final Participation, Exclusion, and Accommodation Rates Grade 4 Mathematics Grade 4 Reading Grade 8 Mathematics Grade 8 Reading Grade 8 Science Grade 8 Writing (WCBA) Grade 12 Writing (WCBA)

Final participation, exclusion, and accommodation rates are presented in quality control tables for each grade and subject by geographic domain and school type. School-level participation 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), for public schools of the Bureau of Indian Education (BIE) for grades 4 and 8, and for Colorado for grade 8. Student-level participation rates were also below 85 percent for students in Detroit for grade 8 public schools. As required by NCES standards, nonresponse bias analyses were conducted on each reporting group falling below the 85 percent participation threshold.

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