Table of Contents  |  Search Technical Documentation  |  References

NAEP Weighting Procedures → Weighting Procedures and Variance Estimation for the 2000 National Main Assessment → Reporting Weights Main → Initial Student Weight for the 2000 National Main Assessment

NAEP Technical DocumentationInitial Student Weight for the 2000 National Main Assessment

The initial student weight is computed in order to facilitate student nonresponse adjustment. It includes the school base weight, two school-level adjustments (one for trimming and one for nonresponse), and certain student-level components that reflect the student sampling rates within each school as noted below. It may be helpful to think of the initial student weight as a student base weight with additional components for school trimming and school nonresponse.

The initial student weight STU_WT is calculated as follows:

STU_WT = SCHBWT x SCH_TRIM x SCH_NRAF x STUSA_WT x OLAP_FC x YRRND_FC

where

• SCHBWT = school base weight,

• SCH_TRIM = school trimming adjustment,

• SCH_NRAF = school nonresponse adjustment,

• STUSA_WT = within-school student sampling weight,

• OVLAP_FC = state assessment overlap adjustment, and

• YRRND_FC = year-round school adjustment.

Printer-friendly Version