Retake the ACT. Take an ACT preparation course to work on areas you had trouble with on the test. Consider getting a tutor to help you study. You can submit the higher score with your UIC admission application.
Take the SAT and submit those scores with your application. Only one standardized test score is required for admission to UIC. SAT scores can be submitted instead of ACT scores.
Go to a junior college first. Complete a minimum of 24 semester hours or 36 quarter hours and meet the minimum transfer grade-point average requirements to apply to UIC as a transfer student. Transfer applicants do not need to submit ACT scores.
Maintain a good GPA and class rank at your current school. Colleges look closely at an applicant's academic record in addition to the ACT score. Ask a teacher to write a letter of recommendation highlighting your academic achievements. Submit this letter with your application.