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NAEP Weighting ProceduresWeighting Procedures and Variance Estimation for the 2000 National Main Assessment → Sample Types and Reporting Populations for the 2000 National Main Assessment

Sample Types and Reporting Populations for the 2000 National Main Assessment

Student assessibility is determined by two sets of administration rules denoted by sample type. Sample type S3 allows accommodations for certain students with special needs or disabilities to participate in the assessments, while sample type S2 does not allow these accommodations. As a result, a larger proportion of students is assessable in sample type S3 than in sample type S2.

Two reporting populations are defined based on the differential treatment of SD/LEP students in the two sample types.

The R2 reporting population is comprised of students who were not offered accommodations. Non-SD/LEP students from either sample type belong to the population, along with SD/LEP students from sample type S2.

The R3 reporting population includes accommodated students. Non-SD/LEP students from either sample type belong to the population, along with SD/LEP students from sample type S3.

Reporting populations may be described using the notation in the table below:

Definitions of reporting populations, by grade and subject, national main assessment: 2000
Subject Grade R2 reporting
population
R3 reporting
population
Mathematics 4, 8, 12 A2 + A3 + B2 A2 + A3 + B3
Reading 4 A2 + A3 + B2 A2 + A3 + B3
Science 4, 8, 12 A2 + A3 + B2 A2 + A3 + B3
NOTE: "A" indicates assessed non-SD/LEP students; "B" indicates assessed SD/LEP students; and "2" or "3" indicates the sample type for which administration rules were used that did not allow accommodations (2) or did allow accommodations (3).
SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2000.

Last updated 17 June 2008 (MH)

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