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NAEP Weighting Procedures → 2003 Weighting Procedures and Variance Estimation → Quality Control for the 2003 Assessment Weighting

NAEP Technical DocumentationQuality Control for the 2003 Assessment Weighting

			Main Quality Control Findings of Interest

Given the complexity of the weighting procedures utilized in NAEP, a range of quality control (QC) processes was introduced into the weighting of the sample results, in order to identify problems, provide feedback to the process, and indicate those areas requiring both remedial and future attention. The QC processes introduced into the 2003 assessment included

• internal checks performed during the weighting process;
• external (before and after) checks of the weighting process;
• review of participation and exclusion rates;
• checking of individual schools' demographic data; and
• comparisons with 2002 demographic data for public schools by state.

To validate the weighting process, extensive tabulations of various school and student characteristics at different stages of the process were conducted. The school level characteristics included in the tabulations were minority enrollment, achievement scores, median income (based on the ZIP Code area in which the school is located), and type of location. At the student level, the tabulations included race/ethnicity, gender, relative age, and SD/LEP status.

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