The National Postsecondary Student Aid Survey (NPSAS) provides a nationally representative, stratified random sample of students attending postsecondary institutions examining their characteristics, with special focus on how they finance their education. The survey is administered every four years by the National Center for Education Statistics (NCES) of the U.S. Department of Education.
In both 2003-2004 and 2007-2008 undergraduates from Minnesota, along with several other states, were oversampled to provide state-level analysis of students' characteristics. The oversampled data provided a rich analysis of undergraduate student characteristics. Minnesota oversampling was not repeated in the 2012 NPSAS, but the U.S. Department of Education recently announced plans to re-instate state oversamples beginning in 2018.