After student trimming, weighting continues in two parallel processes. Reporting weights are the result of one of these processes, and modular weights are the result of the other. Reporting weights are used to derive all estimates of population and student reporting group characteristics that have been presented in various NAEP reports. This includes estimates such as the proportion of students of a specified type who would respond in a certain way to an item and more complex estimates, such as mean proficiency levels.
FSTUWT = STU_WT STUNRADJ x STU_TRIM x RPT_FCTR x RPTPS_AD
STU_WT = the initial student weight, which includes components for the school base weight, school trimming, school nonresponse, and various student sampling factors;
STUNRADJ = student nonresponse adjustment factor;
STU_TRIM = student trimming adjustment factor;
RPT_FCTR = reporting factor; and
RPTPS_AD = poststratification adjustment factor.
There are two sets of final student reporting weights: one for R2 and one for R3.