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NAEP Technical DocumentationSampling Frame for the 2009 State Assessment

			Fourth- and Eighth-Grade Schools and Enrollment in Public School Sampling Frame Twelfth Grade Schools and Enrollment in Public School Sampling Frame in 11 State-by-State Assessments New-School Sampling Frame

Drawing the school samples for the 2009 assessments required a comprehensive list of public schools in each jurisdiction containing information for stratification purposes. As in previous NAEP assessments, the Common Core of Data (CCD) file developed by NCES was used to construct the sampling frame. The CCD file corresponding to the 2005-2006 school year provided the frame for all regular and state-operated public, Bureau of Indian Education, and Department of Defense Education Activity schools.

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

For quality control purposes, school and student counts from the NAEP 2009 sampling frame were compared to school and student counts from the previous frames (2006 and 2007). The counts from Connecticut varied greatly from the 2007 frame due to faulty reporting of enrollment by grade. As a result, the CCD file corresponding to the 2004-2005 school year was used for Connecticut .

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