NAEP Technical DocumentationFinal Participation, Exclusion, and Accommodation Rates for the 2018 Assessment

			Grade 8 - Civics Grade 8 - Geography Grade 8 - U.S. History Grade 8 - Technology and Engineering Literacy (TEL)

Final participation, exclusion, and accommodation rates were presented in quality control tables for the grade 8 assessments by reporting group. School-level participation rates were calculated as they had been calculated for previous assessments and according to National Center for Education Statistics (NCES) standards.

School-level participation rates were below 85 percent for public schools in grade 8 civics/geography/U.S. history and for private schools in both grade 8 civics/geography/U.S. history and grade 8 TEL. Student-level participation rates were all above 85 percent. 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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