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NAEP Sample Design → NAEP 2005 Sample Design → National Assessment Sample Design → Fourth- and Eighth-Grade Public School Science Assessment and Bridge Study → Sampling of Schools for the 2005 National Science Assessment → Sample Selection

NAEP Technical DocumentationSample Selection

Schools were ordered using a serpentine sort—by study type, Census division, urbanicity, and estimated grade enrollment. A systematic sample was then drawn using this serpentine sort and the measures of size. 

In addition, new and newly eligible schools were sampled from the new-school sampling frame for the 2005 state assessment. The new-school sample design did not control overlap with the state assessment's new-school sample. 

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