NAEP Assessment Sample Design → NAEP 2012 Sample Design → 2012 Long-Term Trend (LTT) Assessment Sample Design → 2012 Private School Long-Term Trend (LTT) Assessment → Ineligible Private Schools for the 2012 Long-Term Trend (LTT) Assessment

NAEP Technical DocumentationIneligible Private Schools for the 2012 Long-Term Trend (LTT) Assessment

The Private School Universe Survey (PSS) school file from which most of the sampled schools were drawn corresponds to the 2009-2010 school year, two years prior to the assessment school year. During the intervening period, some of these schools either closed, no longer offered grades for the age group of interest, or were ineligible for other reasons. In such cases, the sampled schools were coded as ineligible.

The table below presents unweighted counts of sampled private schools by age and eligibility status, including the reason for ineligibility.

 

Number of sampled private schools, long-term trend (LTT) assessment, by age and eligibility status: 2012

Age	Eligibility status	Unweighted count of schools	Unweighted percentage
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), 2012 Long-Term Trend Assessment.
9	All age 9 sampled private schools	137	100.00
	Eligible schools	120	87.59
	No eligible students in age range	10	7.30
	School closed	6	4.38
	Not a regular school	1	0.73
	Other ineligible school	0	0.00
	Duplicate on sampling frame	0	0.00
13	All age 13 sampled private schools	130	100.00
	Eligible schools	109	83.85
	No eligible students in age range	12	9.23
	School closed	5	3.85
	Not a regular school	3	2.31
	Other ineligible school	0	0.00
	Duplicate on sampling frame	1	0.77
17	All age 17 sampled private schools	93	100.00
	Eligible schools	65	69.89
	No eligible students in age range	16	17.20
	School closed	4	4.30
	Not a regular school	7	7.53
	Other ineligible school	1	1.08
	Duplicate on sampling frame	0	0.00

The table below presents unweighted counts of sample private schools by age, collapsed private school type, and eligibility status.

Number of sampled private schools, long-term trend (LTT) assessment, by age, private school type, and eligibility status: 2012

Age	Private school type	Eligibility status	Unweighted count of schools	Unweighted percentage
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), 2012 Long-Term Trend Assessment.
9	All Private	Total	137	100.00
		Eligible	120	87.59
		Ineligible	17	12.41
	Catholic	Total	32	100.00
		Eligible	30	93.75
		Ineligible	2	6.25
	Other Private	Total	105	100.00
		Eligible	90	85.71
		Ineligible	15	14.29
13	All Private	Total	130	100.00
		Eligible	109	83.85
		Ineligible	21	16.15
	Catholic	Total	37	100.00
		Eligible	34	91.89
		Ineligible	3	8.11
	Other Private	Total	93	100.00
		Eligible	75	80.65
		Ineligible	18	19.35
17	All Private	Total	93	100.00
		Eligible	65	69.89
		Ineligible	28	30.11
	Catholic	Total	16	100.00
		Eligible	15	93.75
		Ineligible	1	6.25
	Other Private	Total	77	100.00
		Eligible	50	64.94
		Ineligible	27	35.06

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