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NAEP Technical DocumentationParticipation, Exclusion, and Accommodation Rates for the 2008 Arts Assessment

			School Participation Rates Student Participation, Exclusion, and Accommodation Rates

Final participation, exclusion, and accommodation rates were presented in quality control tables for schools and students 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 private schools. Student-level participation rates were above 85 percent for students in public and private schools in both assessment subjects. As required by NCES standards, nonresponse bias analyses were conducted on the private schools as a result of falling below the 85 percent participation threshold.

 

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