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HomeTDWNAEP Sample DesignSample Design for the 2000 AssessmentNational Main Assessment Sample Design in 2000Primary Sampling Units for the 2000 National Main AssessmentSelection of PSUs in the 2000 National Main AssessmentNumber of Noncertainty Strata in Each Major Stratum, by Total Strata and Number of Strata per MSA or Non-MSA PSU, National Main Assessment: By Region, 2000

NAEP Technical DocumentationNumber of noncertainty strata in each major stratum, by total strata and number of strata per MSA or non-MSA PSU, national main assessment: By region, 2000

NAEP region	Total strata	Number of strata for MSA PSUs	Number of strata for non-MSA PSUs
Total	72	36	36
Southeast	24	12	12
Central	20	8	12
West	18	10	8
SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2000.

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