| Term | Deadlines | |
| (Out-of-Country) | (In-Country) | |
| Fall Semester (August – December) | June 1 | July 15 |
| Spring Semester (January – May) | October 1 | November 15 |
| Summer Session (May – August) | March 1 | April 15 |
Applicants are encouraged to complete their applications early, especially for highly competitive and popular programs such as the MS in Electrical Engineering and MS in Computer Science programs. Applications are processed on a rolling basis and once seats are filled for a particular program in a particular term, additional applicants will be denied admission. Plan ahead.
The following programs admit only once a year for Fall term:
| Program | Deadline |
| Art Studio Art Therapy Counseling Biotechnology Management History Psychology Social Work Speech Language Pathology | February 1 February 1 February 28 February 1 February 1 February 15 February 1 |
The following programs admit only once a year for Summer term:
| Program | Deadline |
| Master of Arts in Teaching | April 30 |
Deadlines for applications to the SIUE School of Nursing Master's Programs:
| Program | Deadline |
| Family Nurse Practitioner | March 1 prior to admission the following Fall Semester. June 1 prior to admission to the Summer Semester of the following year. (For example: June 1, 2011 for May 2012) |
