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Participation Rates in Economics

The school participation rate for the grade 12 economics assessment was 79 percent (83 percent for public schools and 41 percent for private schools). The student participation rate for economics was 73 percent (72 percent for students in public schools and 87 percent for students in private schools). To ensure unbiased samples, NCES statistical standards require that nonresponse bias analyses be conducted for any school or student group with a participation rate that falls below 85 percent. The results showed that school substitution and nonresponse adjustments were effective in reducing the observable nonresponse bias for public and private schools and for public school students.

A NAEP/Governing Board reporting rule requires that public/private and regional student groups will not be reported if the initial school participation rate falls below 70 percent. This requirement for the grade 12 economics assessment was not met for private schools, for any subcategory of private schools, or for schools in the western region; therefore, data for these groups are not provided in this report or on the NAEP website.

National school and student participation rates in NAEP economics at grade 12, by type of school: 2006
  School participation Student participation
  Student-weighted School-weighted Number of schools participating after substitution Student-
Number of students assessed
Type of school Percent
before substitution
   Nation 79 84 78 81 590 73 11,500
Public 83 87 89 91 520 72 10,300
Private 41 54 48 56 70 87 1,200
NOTE: The numbers of schools are rounded to the nearest ten, and the numbers of students are rounded to the nearest hundred.
SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2006 Economics Assessment.

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 substitutions.

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