| 2025 Summer Semester |
| July 4 | Independence Day observed (Wash U closed) |
| August 14 | Last Summer Session Ends |
| August 15 | Summer 2025 Degree Date |
| 2025 Fall Semester |
| August 25 | First day of classes |
| September 1 | Labor Day Holiday – no classes |
| September 4 | Last day to add/wait/swap/drop (D) on regular session classes |
| September 23 | Spring 2026 classes published |
| September 28 | Last day to apply for degree completion for December 2025 |
| October 4-7 | Fall break – no classes |
| November 14 | Last day to withdraw (W) from regular session classes |
| November 26-30 | Thanksgiving break – no classes |
| December 8-10 | Reading days |
| December 17 | Last day of regular session classes and final exams |
| December 17 | Dissertation submission deadline |
| December 17 | Last day to submit online course evaluations for current regular session classes |
| December 22 | Grading deadline: Noon |
| 2026 Spring Semester |
| January 12 | First Day of Classes |
| January 19 | Martin Luther King Holiday – No Classes |
| March 8-15 | Spring Break – No Classes/td> |
| April 24 | Last day of classes |
| April 27 – May 6 | Reading and Exams |
| May 15 | Commencement |
| 2026 Summer Semester |
| May 18 | First Summer Session Begins |
| May 25 | Memorial Day Holiday – No Classes |
| July 3 | Independence Day Holiday – No Classes |
| August 13 | Last Summer Session Ends |
| August 13 | Summer 2026 Degree Date |