The average graduation rate of Top Colleges in Maine is 68.40%. Bowdoin College has the highest graduation rate of 95% and University of Southern Maine has the lowest graduation rate of 40%The average transfer-out rate is 9.83% and the average retention rate is 83.00% Table. Top Colleges in Maine Graduation Rate Comparison RankSchoolGraduation RateTransfer-out RateRetention RateStudents to Faculty Ratio 1Colby CollegeWaterville, ME89%7%94%9 to 1 2Bowdoin CollegeBrunswick, ME95%3%97%9 to 1 3Bates CollegeLewiston, ME90%7%91%9 to 1 4College of the AtlanticBar Harbor, ME68%13%85%9 to 1 5Saint Joseph's College of MaineStandish, ME66%-75%10 to 1 6Husson UniversityBangor, ME59%-75%15 to 1 7University of New EnglandBiddeford, ME68%2%79%11 to 1 8Thomas CollegeWaterville, ME54%-77%20 to 1 9University of MaineOrono, ME55%-83%15 to 1 10University of Southern MainePortland, ME40%27%74%14 to 1-Average68.4000%9.8333%83.0000%12.1000 to 1