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NAEP Sample Design → NAEP 2004 Long-Term Trend Sample Design → Long-Term Trend Sampling of Primary Sampling Units → Primary Sampling Unit Generation: Certainty PSUs

NAEP Technical DocumentationPrimary Sampling Unit Generation: Certainty PSUs

Any Consolidated Metropolitan Statistical Area (CMSA), Metropolitan Statistical Area (MSA), or New England County Metropolitan Area (NECMA) proto-PSU was defined as a certainty PSU if it had 800,000 or more youths. The estimated number of youths is the number of persons age 17 or less from the 2000 Census Summary File 1 (SF-1) files. These PSUs were so large that a sample of schools was taken from all of these PSUs (rather than a sample of these PSUs). There were two exceptions to the 800,000 cutoff. The Honolulu, Hawaii MSA was added because of its unique racial composition. The Washington, DC portion of the Washington-Baltimore CMSA was included as a certainty as it will be re-attached to the Maryland portion of this CMSA in field work. The table below provides a listing of the 17 certainty PSUs.

State, CMSA or MSA definition, number of counties and number of youths, for certainty PSUs, long-term trend assessment: By primary sampling unit, 2004

PSU	Consolidated Metropolitan Statistical Area (CMSA) or Metropolitan Statistical Area (MSA)	State	Number of counties	Number of youths
Total	†	†	137	25,180,000
1--1	New York-Northern New Jersey-Long Island	NY	12	3,145,000
1--2	New York-Northern New Jersey-Long Island	NJ	14	1,637,000
1--3	Boston-Worcester-Lawrence	MA	7	1,254,000
1--4	Washington-Baltimore	MD	12	1,214,000
1--5	Philadelphia-Wilmington-Atlantic City	PA	5	969,000
1--6	Washington-Baltimore	DC	1	115,000
†	Total NAEP Region Northeast	†	51	8,333,000
2--1	Atlanta	GA	20	1,096,000
2--2	Miami-Fort Lauderdale	FL	2	942,000
†	Total NAEP Region Southeast	†	22	2,038,000
3--1	Chicago-Gary-Kenosha	IL	10	2,255,000
3--2	Detroit-Ann Arbor-Flint	MI	10	1,438,000
†	Total NAEP Region Central	†	20	3,694,000
4--1	Los Angeles-Riverside-Orange County	CA	5	4,671,000
4--2	San Francisco-Oakland-San Jose	CA	10	1,663,000
4--3	Dallas-Fort Worth	TX	12	1,463,000
4--4	Houston-Galveston-Brazoria	TX	8	1,356,000
4--5	Seattle-Tacoma-Bremerton	WA	6	880,000
4--6	Phoenix-Mesa	AZ	2	873,000
4--7	Honolulu	HI	1	209,000
†	Total NAEP Region West	†	44	11,115,000
† Not applicable. SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2004.

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