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NAEP Technical DocumentationSampling Frame for the 2009 Twelfth-Grade Public School National Assessment

			Twelfth-Grade Schools and Enrollment in Public School Sampling Frame New-School Sampling Frame for the National Assessment

As with the NAEP state sample, the sampling frame for public schools was derived from the Common Core of Data (CCD) file corresponding to the 2005-2006 school year¹. The CCD files provided the frame for all regular public, state-operated public, Bureau of Indian Education (BIE), and Department of Defense Education Activity (DoDEA) schools open during the 2005-2006 school year. 

The sampling frame excluded ungraded schools, vocational schools with no enrollment, special-education-only schools, prison and hospital schools, home school entities, virtual or online schools, adult and evening schools, and juvenile correctional institutions.

¹The exception to this was the state of Connecticut. For Connecticut, the 2004-2005 CCD was used. This decision was due to finding anomalies with the 2005-2006 CCD for Connecticut that could not be resolved in time for NAEP 2009 school sampling.

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