The semester-based academic calendar provides students, faculty and staff with important dates and deadlines.
- Semester start and end dates
- registration
- course add/drop/withdraw deadlines
- reading days and final exams
- breaks and holidays
- future academic calendars
Every reasonable attempt is made to ensure the accuracy and completeness of this calendar. Dates can change without notice when circumstances warrant, and the calendar is updated accordingly. Individual schools may also have their own specific dates and deadlines, as it is not uncommon for the graduate and professional programs to follow different deadlines.
View Current & Future Academic Calendars
Undergraduate Business
2025 Summer Semester
May 12
First day of classes for Half A and Full Semester
May 19
First Summer Session begins
First Summer Session begins
The Date of the Olin School of Business First day differs from the regular WashU Academic Calendar. Please check your specific school calendar.
May 19
Last day to add/wait/drop (D) on Half A classes
May 26
Memorial Day Holiday - No Classes
May 26
Last day to change grade option for Half A classes
May 26
Last day to add/wait/drop (D) for full semester classes
June 2
Last day to withdraw (W) from Half A classes
June 2
Last day to change grade option for full semester classes
June 23
Last day of lectures for Half A classes
June 24-25
Exams for Half A classes
June 26
First day for Half B classes
July 3
Last day to add/wait/drop (D) for Half B classes
July 3
Last day to file for August Degree Completion
July 4
Independence Day Holiday - No Classes
July 3-6
Summer Break for Olin Classes
July 10
Last day to change grade option for Half B classes
July 17
Last day to withdraw (W) from Half B classes
July 25
Last day to withdraw (W) for full semester classes
August 11
Last day of classes for Half B and full semester classes
August 12-14
Exams for Half B and full semester classes
August 14
Last Summer Session Ends
August 14
Summer 2025 Degree Date
August 18
Summer grades due