NAEP Technical DocumentationSchool Sample Sizes: PSS-Based and New-School Sampling Frames for the 2017 Private School National Assessment in Mathematics and Reading

The following table presents the number of schools selected from the private school sampling frame (constructed from the Private School Universe Survey [PSS] file) and the new-school sampling frame, for mathematics and reading at grades 4 and 8, by school type.

Number of schools in the total, PSS-based, and new-school samples, national private assessment, by grade and school type: 2017
Grade and private school type	Total school sample	PSS-based school sample	New-school sample
# Rounds to zero. † Not applicable. NOTE: Numbers of schools 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), 2017 National Assessment.
Grade 4
All private	550	540	#
Catholic	160	150	#
Non-Catholic	370	370	†
Unknown affiliation	30	30	†
Grade 8
All private	570	570	#
Catholic	150	150	#
Non-Catholic	390	390	†
Unknown affiliation	30	30	†

Last updated 20 July 2022 (PG)