This report examines undergraduate persistence and time to degree at public universities in Illinois, focusing on the year-to-year persistence of cohorts of freshmen students admitted to 10 universities between 1983 and 1993. It also examines the public university graduating class of 1993-94 and describes the factors influencing time to degree. It discusses persistence rates at particular institutions and among specific categories of students, finding that, contrary to expectations, year-to-year persistence rates have not consistently increased in response to statewide efforts to strengthen undergraduate education. It also found that for students who attended a single institution and did not change majors, the median time to degree was 4.0 years, with 35 percent graduating in less than 4 years. The median time was 4.3 years for single-institution graduates with one major change and 5.0 years for those with two or more major changes. Students who transferred but did not change majors graduated on average in 5.0 years. Eight tables present various data on persistence and time to degree. (MDM)