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

The Common Core of Data (CCD) public school file from which most of the sampled schools were drawn corresponds to the 2002-03 school year, some two years prior to the assessment school year. During the intervening period, some of these schools either closed, no longer offered the grade of interest, or were ineligible for other reasons. In such cases, the sampled school were considered to be ineligible.

The table below presents unweighted counts of ineligible schools, and their eligibility status, for the school samples.

NAEP twelfth-grade sample public schools, by eligibility status: 2005

Eligibility status	Unweighted count of schools	Unweighted percent
Total sampled schools	830	100.00
Eligible schools	750	90.22
Inligible schools	80	9.78
Closed	10	1.33
Did not have grade	10	0.71
No eligible students in sampled grade	#	0.36
Not regular schools	50	5.68
Other ineligible	10	1.69
# Rounds to zero. NOTE: Numbers in table are rounded. Percentages are calculated using unrounded numbers. 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), 2005.

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