Table of Contents  |  Search Technical Documentation  |  References

NAEP Sample Design → NAEP 2005 Sample Design → National Assessment Sample Design → Twelfth-Grade Public School National Assessment → Substitute Schools for the 2005 National Twelfth-Grade Assessment

NAEP Technical DocumentationSubstitute Schools for the 2005 National Twelfth-Grade Assessment

Substitutes were preselected for the twelfth-grade public school sample by sorting the school frame file according to the actual order used in the sampling process (the implicit stratification). Each sampled school had each of its nearest neighbors on the school frame file selected as a potential substitute. The last sort ordering was by grade enrollment. The result was that the nearest neighbors had grade enrollment values very close to that of the sampled school. To be eligible as a potential substitute, the neighbor needed to be a nonsampled school (for any grade). The school should also be in the same implicit stratum as the sampled school. If both nearest neighbors were eligible to be substitutes, the one with a closer grade enrollment was chosen.

Of the original sample of 831 schools, 800 were assigned a substitute.

Printer-friendly Version