NAEP Technical DocumentationSchool Response Rates for the 2012 Long-Term Trend (LTT) Assessment

The following table presents counts of eligible sampled schools and participating schools, as well as weighted school response rates, for the 2012 Long-Term Trend (LTT) math and reading assessments. The weighted school response rates estimate the proportion of the student population that is represented by the participating school sample prior to substitution.

School response counts and rates for public and private schools before substitution, long-term trend reading and mathematics assessments, by school type, geographic region, and age: 2012
Age	School type and geographic region	Number of sampled eligible schools	Number of participating schools	Weighted school participation rate prior to substitution (percent)
NOTE: National all includes national public, national private, Bureau of Indian Education, and Department of Defense Education Activity schools located in the United States. 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 Assessments.
9	National all	451	361	86.64
	National public	330	293	89.00
	Northeast public	45	45	100.00
	Midwest public	64	60	92.23
	South public	133	115	86.93
	West public	88	73	82.49
	National private	120	67	61.16
	Catholic	30	28	95.06
	Non-Catholic private	90	39	37.71
13	National all	440	365	87.87
	National public	331	296	89.94
	Northeast public	46	46	100.00
	Midwest public	64	61	92.51
	South public	133	119	89.99
	West public	88	70	81.29
	National private	109	69	68.63
	Catholic	34	31	91.61
	Non-Catholic private	75	38	49.13
17	National all	432	349	83.82
	National public	367	313	85.58
	Northeast public	55	54	97.50
	Midwest public	70	66	92.93
	South public	142	119	83.84
	West public	100	74	72.95
	National private	65	36	62.51
	Catholic	15	13	88.18
	Non-Catholic private	50	23	40.30

Last updated 26 February 2016 (GF)

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