NAEP Assessment Weighting Procedures → Weighting Procedures for the 2009 Assessment → Quality Control on Weighting Procedures for the 2009 Assessment → Main Quality Control Findings of Interest for the 2009 Assessment → Participation, Exclusion, and Accommodation Rates for Grade 12 Science Interactive Computer Tasks (ICT)

NAEP Technical DocumentationParticipation, Exclusion, and Accommodation Rates for Grade 12 Science Interactive Computer Tasks (ICT)

The following table displays the school- and student-level response, exclusion, and accommodation rates for the grade 12 science ICT assessment. Various weights were used in the calculation of the rates, as indicated in the column headings of the table.

The participation rates reflect the participation of the original sample schools only and do not reflect any effect of substitution. The rates weighted by the base weight and enrollment show the approximate proportion of the student population in the jurisdiction that is represented by the responding schools in the sample. The rates weighted by just the base weight show the proportion of the school population that is represented by the responding schools in the sample. These rates differ because schools differ in size.

Participation, exclusion, and accommodation rates, grade 12 science interactive computer tasks (ICT) assessment, by school type and geographic region: 2009
School type and geographic region Number of schools in original sample School participation rates (percent) before substitution (weighted by base weight and enrollment) School participation rates (percent) before substitution (weighted by base weight only) Number of students sampled Weighted percentage of students excluded Weighted student participation rates (percent) after makeups Weighted percentage of students accommodated
1 Includes national public, national private, Bureau of Indian Education, and Department of Defense Education Activity schools located in the United States.
NOTE: Numbers of schools are rounded to nearest ten, and numbers of students are rounded to 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), 2009 Science Assessment.
National all1 260 83.46 86.27 2,800 2.90 83.63 7.16
Northeast all 50 82.64 87.75 500 2.02 81.77 9.86
Midwest all 60 92.67 96.45 800 3.36 82.98 6.58
South all 80 89.65 88.85 1,000 3.31 87.07 7.34
West all 70 66.16 70.69 500 2.59 80.31 5.18
National public 220 85.36 85.85 2,600 3.12 83.13 7.32
National private 40 63.55 87.33 300 0.50 89.68 5.46
Catholic 10 71.00 89.31 100 0.00 91.13 3.60
Non-Catholic private 30 53.52 86.58 200 1.17 87.41 7.93

Last updated 02 August 2010 (JL)