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For the 2006 assessment, the calculation of the student-level replicate base weights for student k from school s in stratum j for each of the 62 replicates, STU_BWTsck(r) r = 1 to 62, were calculated as follows:
where
SCH_BWTjs(r) is the replicate school base weight;
SCHSESWTjs is the school-level session assignment weight used in the full-sample weight;
WINSCHWTjs is the within-school student sampling weight used in the full-sample weight;
STUSESWTjsk is the student-level session assignment weight used in the full-sample weight;
SUBJFACjs is the subject factor used in the full-sample weight;
SUBADJjs is the substitute adjustment factor used in the full-sample weight;
YRRND_AFjs is the year-round adjustment factor used in the full-sample weight.
These components are described on the Student Base Weights page.