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 4 Science Interactive Computer Test (ICT)

NAEP Technical DocumentationParticipation, Exclusion, and Accommodation Rates for Grade 4 Science Interactive Computer Test (ICT)

The following table displays the school- and student-level response, exclusion, and accommodation rates for the grade 4 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 4 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 190 96.13 91.33 2,400 3.31 95.16 9.25
Northeast all 30 94.96 87.50 400 4.71 94.45 17.39
Midwest all 50 95.04 95.00 500 1.62 94.74 8.48
South all 70 97.51 93.83 900 3.48 95.11 8.80
West all 40 95.70 86.28 500 3.78 96.21 4.81
National public 160 98.33 97.42 2,200 3.59 95.16 9.90
National private 30 75.62 71.34 200 0.55 95.12 2.81
Catholic 10 88.07 77.10 100 0.00 97.55 4.18
Non-Catholic private 20 64.24 69.17 100 1.01 92.92 1.66

Last updated 02 August 2010 (JL)