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NAEP Technical DocumentationIneligible Schools in the 2002 National Main Assessment

Some of the schools in the private school samples and the twelfth-grade public school sample were found to be ineligible (e.g., closed, not a regular school,¹ no longer offering grade). The table below presents counts of ineligible schools by status for the twelfth-grade public school sample and the three private school samples.

Number and percentage of sampled public and private schools by grade, school type, and eligibility status: 2002 

Eligibility status	Twelfth-grade public schools		Fourth-grade private schools		Eighth-grade private schools		Twelfth-grade private schools
	Number of schools	Percent of sample	Number of schools	Percent of sample	Number of schools	Percent of sample	Number of schools	Percent of sample
Total	1,257	100.0	1,583	100.0	1,622	100.0	898	100.0
Closed	3	0.2	23	1.5	40	2.5	19	2.1
Did not have grade	14	1.1	18	1.1	20	1.2	21	2.3
Not regular schools1	66	5.3	21	1.3	37	2.3	32	3.6
No eligible students in sampled grade	3	0.2	10	0.6	14	0.9	15	1.7
Duplicate on sampling frame	0	0	1	0.1	0	0	0	0
Other ineligible	1	0.1	1	0.1	1	0.1	1	0.1
Eligible	1,170	93.1	1,509	95.3	1,510	93.1	810	90.2
1 Educational facilities which are not "regular schools" include special education schools for severely disabled students, adult education centers, annexes, and other such facilities. These are generally screened out of the frame when that is possible to do definitively: otherwise they are sampled and then identified in the field as not regular. NOTE: Detail may not sum to totals because of rounding. SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2002.

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