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NAEP Technical DocumentationSchool Sample Sizes: Frame and New School

The following table presents the number of schools selected from the private school sampling frame (constructed from the Private School Universe Survey file) and the new-school sampling frame, for fourth, eighth, and twelfth grade, by school type.

NAEP private school frame-based and new school samples, by grade and school type: 2009

Grade and private school type	Frame school sample	New-school sample	Total school sample
# Rounds to zero. NOTE: School counts are rounded to nearest ten. Detail may not sum to totals due to rounding. SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2009 Assessment.
Fourth grade
All private	520	10	520
Catholic	170	10	170
Non-Catholic private	330	0	330
Unknown afffiliation	30	0	30
Eighth grade
All private	540	10	540
Catholic	160	10	170
Non-Catholic private	350	0	350
Unknown afffiliation	30	0	30
Twelfth grade
All private	340	#	350
Catholic	40	#	40
Non-Catholic private	280	0	280
Unknown afffiliation	30	0	30

   

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