NAEP Assessment Sample Design → NAEP 2011 Sample Design → Sample Design for the 2011 National Assessment → 2011 Writing Computer-Based Assessment (WCBA) → Public School 2011 Writing Computer-Based Assessment (WCBA) → Sampling Frame for the Public School 2011 Writing Computer-Based Assessment (WCBA)

NAEP Technical DocumentationSampling Frame for the Public School 2011 Writing Computer-Based Assessment (WCBA)

			Eighth- and Twelfth-Grade Schools and Enrollment in the Public School WCBA Sampling Frame New-School Sampling Frame for the Public School Writing Computer-Based Assessment

The sampling frame for public schools was derived from the Common Core of Data (CCD) file corresponding to the 2007-2008 school year. The CCD files provided the frame for all regular public, state-operated public,Bureau of Indian Education (BIE), and Department of Defense Domestic Dependent Elementary and Secondary Schools (DDESS) open during the 2007-2008 school year. 

The sampling frame was restricted to schools located in the primary sampling units (PSUs) selected for the NAEP 2011 writing computer-based assessment (WCBA). The sampling frame also excluded ungraded schools, vocational schools with no enrollment, special-education-only schools, homeschool entities, prison or hospital schools, and juvenile correctional institutions.

For quality control purposes, school and student counts from the sampling frame were compared to school and student counts from previous public school frames by grade. No major discrepancies were found.

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