Northern Illinois University is a public university in DeKalb, Ill., with an enrollment between 20,000 and 25,000 students. Applicants in the top half of their high school class with a GPA of 2.75 or above need a composite score of 19 on the ACT. Applicants in the top two-thirds of their class, but not the top half, need a GPA of at least 2.5 and an ACT composite score of 23.

What Else Do I Need?

Northern Illinois University admits just over half of of the students who apply each year and accepts either the ACT or SAT for admission. The middle 50 percent of admitted applicants score between 20 and 25 on the ACT. In addition to standardized test scores, applicants must have completed the equivalent of four years of English, two years of social studies including one year of U.S. history, two years of science including physical science, biology and one lab class, three years of math including geometry and advanced algebra or trigonometry, and one year of a foreign language, art, music or vocational training.