Southern Illinois University (SIU) typically operates on a semester system, with intakes in Fall (August), Spring (January), and Summer (May). Application deadlines vary by program and level of study. For undergraduate programs, the priority deadline for Fall is usually December 1, while Spring applications are due by November 1. Graduate programs may have rolling deadlines or specific dates, often 6-8 weeks before the semester starts.
Prospective students should verify deadlines on the official SIU website or contact the admissions office, as some departments may enforce earlier cutoffs. International applicants are advised to apply earlier to accommodate visa processing.
