| Week of April 6 | Registration for Summer 2009 Courses Begins |
| Friday, May 1 | Application Deadline for Visiting Students |
| Monday, June 15 | Classes Begin* |
| Sunday, August 9 | Classes End* |
* These begin/end dates represent standard summer session dates. NIU also offers summer courses which begin/end at variable dates during the session. (e.g. first four weeks, last four weeks, rotating meeting days)
