NAEP Technical DocumentationComputing Student-Level Replicate Base Weights for the 2014 Assessment

For the 2014 assessment, the calculation of the student-level replicate base weights for student k from school s in stratum j for each of the sixty-two replicates, STU_BWTjsk(r), where r = 1 to 62, were calculated as follows:  

     

STU underscore BWT subscript jsk left brace r right brace equals SCH underscore BWT subscript js left brace r right brace times

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; and

  • YRRND_AFjs is the year-round adjustment factor used in the full-sample weight.

These components are described on the Student Base Weights page.

Last updated 14 April 2021 (SK)