NAEP Technical DocumentationStudent Nonresponse Adjustment Factors

Unweighted and Weighted Counts of Assessed and Excluded Students (Accommodations Not Permitted [R2])

Grade 4 Mathematics
Grade 8 Mathematics
Grade 4 Science
Grade 8 Science

Unweighted and Weighted Counts of Assessed and Excluded Students (Accommodations Permitted [R3])

Grade 4 Mathematics
Grade 8 Mathematics
Grade 4 Science
Grade 8 Science

The student-level nonresponse adjustments for the assessed students were made within classes defined by the SD/LEP status, sample type, final school-level nonresponse adjustment classes, monitoring status of the school, and age group of the students. Subsequently, in each jurisdiction, the final student weight for the j^th student of the i^th school in class k was then computed as:

where
	= the nonresponse-adjusted school weight for school i;
	= the within-school weight for the j^th student in school i, and

In the above formulation, the summation includes all students, j, in the k^th final (collapsed) student nonresponse class. The indicator variable had a value of 1 when the j ^th student in adjustment class k participated in the assessment; otherwise, = 0.

For excluded students, no nonresponse adjustment procedures were applied because excluded students were not required to complete an assessment. In effect, all excluded students were considered respondents, and placed in a stratum by themselves. Weights are provided for excluded students so as to estimate the size of this group and its population characteristics.

The following tables show the distribution of the student-level nonresponse adjustment factor STNRA among the 2000 state assessment's participating jurisdictions by grade (fourth and eighth), assessment subject (mathematics and science), and reporting population. Reporting populations differ by whether accommodations were offered to disabled or limited English proficiency (SD/LEP) students. The non-accommodated reporting population, also known as the R2 reporting population, includes all non SD/LEP students plus SD/LEP students from non-accommodated sessions. The accommodated reporting population, also known as the R3 reporting population, includes all non SD/LEP students plus SD/LEP students from accommodated sessions.

Distribution of the Student-Level Nonresponse Adjustment Factor STNRA

Grade 4 Mathematics (Accommodations Not Permitted [R2])
Grade 4 Science (Accommodations Not Permitted [R2])

Grade 4 Mathematics (Accommodations Permitted [R3])
Grade 4 Science (Accommodations Permitted [R3])

Grade 8 Mathematics (Accommodations Not Permitted [R2])
Grade 8 Science (Accommodations Not Permitted [R2])

Grade 8 Mathematics (Accommodations Permitted [R3])
Grade 8 Science (Accommodations Permitted [R3])

Last updated 26 August 2008 (FW)

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