This report uses data from the 1995-96 National Postsecondary Student Aid Study to profile undergraduates who were enrolled in U.S. postsecondary institutions in the academic year 1995-96. The report begins with an essay that explores the extent to which undergraduates work while they are in school. This essay found that 79 percent of undergraduates reported working while in school; half worked to help pay for their education and 29 percent considered themselves primarily employees who were also taking classes. Working students were employed an average of 25 hours per week, with 20 percent of full-time students also working full-time. Working students noted that working limited their class schedules, and about 25 percent reported that work adversely affected their academic performance. A negative effect was also found between work and one-year persistence. Students who worked fewer hours were more likely than those who worked more hours to borrow to pay for their educations. The report's data tables are grouped into those on the essay's topic; supplemental data about work; enrollment and attendance; degree program, field of study, and grade point average; student characteristics; financial aid; and educational aspirations and community service. (Appendix contains a glossary, technical notes, and methodology information.)