​​​​​​​​​​​​NAEP Technical DocumentationSampling Frame for the 2024 State Assessment

The primary sampling frames for the 2024 fourth- and eighth-grade public school samples for the state assessments in mathematics and reading were developed from the Common Core of Data (CCD) file corresponding to the 2021–2022 school year. The CCD file is the Department of Education’s primary database of public elementary and secondary schools in the United States including U.S. territories. It includes all regular public, state-operated public, Bureau of Indian Education (BIE), and Department of Defense Education Activity (DoDEA) schools open during the 2021–2022 school year. These sampling frames are referred to as the CCD-based sampling frames.

A secondary set of sampling frames was also created for these fourth- and eighth-grade samples to account for schools that newly opened or became newly eligible between the 2021–2022 and 2023–​202​4 school years. These frames contain brand-new and newly eligible fourth- and eighth-grade schools and are referred to as the new-school sampling frames.

Both sets of sampling frames 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. Vocational schools with no enrollment serve students who split their time between the vocational school and their home school.

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