The average graduation rate of Top Colleges in Illinois is 77.90%. University of Chicago has the highest graduation rate of 96% and University of Illinois Chicago has the lowest graduation rate of 62%The average transfer-out rate is 19.00% and the average retention rate is 87.40% Table. Top Colleges in Illinois Graduation Rate Comparison RankSchoolGraduation RateTransfer-out RateRetention RateStudents to Faculty Ratio 1University of ChicagoChicago, IL96%-99%5 to 1 2Northwestern UniversityEvanston, IL95%-98%6 to 1 3Principia CollegeElsah, IL74%-83%6 to 1 4University of Illinois Urbana-ChampaignChampaign, IL85%-95%20 to 1 5Illinois Institute of TechnologyChicago, IL75%-86%14 to 1 6University of Illinois ChicagoChicago, IL62%-80%17 to 1 7Wheaton CollegeWheaton, IL85%-93%10 to 1 8Illinois State UniversityNormal, IL65%-81%19 to 1 9Illinois Wesleyan UniversityBloomington, IL75%19%80%12 to 1 10Lewis UniversityRomeoville, IL67%-79%13 to 1-Average77.9000%19.0000%87.4000%12.2000 to 1