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National school and student participation rates in NAEP mathematics at age 13, by type of school: 2008
School participation
Student participation
Student-weighted
School-weighted
Number of schools participating after substitution
Student-weighted percent
Number of students assessed
Type of school
Percent before substitution
Percent
after
substitution
Percent before substitution
Percent
after
substitution
Nation
95
97
89
92
420
94
8,500
Public
97
98
97
98
300
93
7,000
Private
79
82
73
79
120
95
1,500
NOTE: Columns of percentages have different denominators. The student-weighted school participation rates are calculated based on the estimated number of students represented by either the initially selected schools that participated in the assessment (before substitution) or the participating schools whether originally selected or selected as a substitute for a school that chose not to participate (after substitution). The school-weighted school participation rates are calculated based on the estimated number of schools either before or after substitution. The numbers of schools are rounded to the nearest ten, and the numbers of students are rounded to the nearest hundred. 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), 2008 Long-Term Trend Mathematics Assessment.
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2008 Long-Term Trend Report Card