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NAEP Technical DocumentationParticipation, Exclusion and Accommodation Rates for the 2012 Economics Assessment

			Grade12 Assessment

Final participation, exclusion, and accommodation rates were presented in quality control tables for the grade 12 economics assessment 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 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. Even though the school-level participation rate for public schools was above 85 percent, a nonresponse bias analysis was conducted due to the state of Texas refusing to participate.

 

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