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NAEP Assessment Weighting Procedures → Weighting Procedures for the 2008 Assessment

Weighting Procedures for the 2008 Assessment


Arts Assessment Weighting Procedures

LTT Assessment Weighting Procedures

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The NAEP 2008 sample design consisted of two assessments: arts and long-term trend (LTT).

Both assessments included separate sample components for public and private schools and both were based on a three-stage sample design:

  • selection of primary sampling units (PSUs);
  • selection of schools within strata, and
  • selection of students within schools.

Weights were developed to reflect these three stages of selection and to adjust for school and student nonresponse. Replication-based variance methods were used to reflect the complex sample design.

Last updated 02 August 2010 (JL)
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National Center for Education Statistics -
U.S. Department of Education