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NAEP Technical DocumentationStudent Response and Exclusion Rates for the 2008 Long-Term Trend (LTT)  Assessment

The first table below presents the weighted student response and exclusion rates for the long-term trend reading assessment by school type (public, Catholic, non-Catholic private) and age group. The weighted response rates utilize the student base weights, and indicate the weighted percentage of assessed students as a percentage of all students to be assessed. The exclusion rates give the weighted percentage of excluded students with disabilities (SD) or excluded English language learners (ELL) as a percentage of all absent, assessed, and excluded students.

Weighted student response and exclusion rates for public and private schools, reading long-term trend (LTT) assessment, by age and school type: 2008

School type	Age 9			Age 13			Age 17
	Weighted student response rates	Weighted percentage of all students who are SD and excluded	Weighted percentage of all students who are ELL and excluded	Weighted student response rates	Weighted percentage of all students who are SD and excluded	Weighted percentage of all students who are ELL and excluded	Weighted student response rates	Weighted percentage of all students who are SD and excluded	Weighted percentage of all students who are ELL and excluded
# Rounds to zero. NOTE: Since students can be both SD (students with disabilities) and ELL (English language learners), the rates may sum to more than 100 percent. SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2008 Long-Term Trend Assessment.
National public	94.85	3.26	1.66	93.69	3.20	1.11	87.55	3.23	0.82
All private	95.52	0.42	0.15	95.11	0.87	0.20	90.45	0.24	#
Catholic	94.98	0.59	#	95.84	1.34	#	91.52	0.20	#
Other non-Catholic private	96.23	0.26	0.29	93.98	0.41	0.39	88.66	0.28	#

Weighted student response and exclusion rates for public and private schools, mathematics long-term trend (LTT) assessment, by age and school type: 2008

School type	Age 9			Age 13			Age 17
	Weighted student response rates	Weighted percentage of all students who are SD and excluded	Weighted percentage of all students who are ELL and excluded	Weighted student response rates	Weighted percentage of all students who are SD and excluded	Weighted percentage of all students who are ELL and excluded	Weighted student response rates	Weighted percentage of all students who are SD and excluded	Weighted percentage of all students who are ELL and excluded
# Rounds to zero. NOTE: Since students can be SD (students with disabilities) and ELL (English language learners), the rates may sum to more than 100 percent. SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2008 Long-Term Trend Assessment.
National public	94.52	2.26	0.96	93.44	2.94	0.43	87.83	3.41	0.83
All private	95.35	0.36	0.16	95.39	0.28	#	90.40	0.31	#
Catholic	95.62	0.08	#	96.28	0.45	#	91.03	0.05	#
Other non-Catholic private	94.98	0.63	0.31	94.01	0.12	#	89.39	0.59	#

 

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