BPS:90/94 survey followed approximately 9,000 students from the 1989–90 National Postsecondary Student Aid Study (NPSAS:90) sample who were identified as first-time beginning (FTB) students in academic year 1989–90.9,10 These students were followed in 1992 and 1994. The unweighted BPS:90/94 response rate is 91.4 percent. The weighted response rate, using the NPSAS:90 analysis weights, is 91.0 percent. Among respondents, about 10 percent of sample members did not have sufficiently detailed enrollment histories to allow for classification in the persistence variables used in this report. The weight used for the analysis of data from the BPS:90/94 was WTA00, which includes students who responded to both the first and last follow-up surveys.