Founded in 1857, Illinois State University is the first public institution in Illinois and one of the oldest in the Midwestern United States. Buy an Illinois State University diploma. Make an Illinois State University degree. Buy an ISU diploma in Normal. It has a total student body of 20,856, including 18,344 undergraduates and 2,512 graduate students. International students make up 12% of the student body. The university has a faculty of 1,136, with a student-faculty ratio of 1:19. The university offers 67 undergraduate degrees and 39 graduate programs across six colleges. Class sizes are small, with 68% of classes having fewer than 30 students. Illinois State University is the only public university in Illinois designated a “National Doctoral Research University” by the Carnegie Foundation for its outstanding educational contributions.