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Initial 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


Last updated 03 March 2008 (PE)

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