Academic Calendar
Add, drop, withdrawal and refund dates listed below are for courses that extend through the entire term. Proportionate dates apply to block and short courses. See the "Short Courses with Unique Drop/Add Deadlines" page of the Registrar website at registrar.okstate.edu for more information. Additional deadlines apply to graduate students. See the Graduate College Academic Calendar.
2025-2026
| Fall 2025 | Spring 2026 | Summer 2026 (main 8-week term) | |
|---|---|---|---|
| Late Enrollment Fee (Assessed if initial enrollment occurs on or after this date) | Aug 18 | Jan 12 | Jun 8 |
| Class work begins | Aug 18 | Jan 12 | Jun 8 |
| University holiday (spring) | Jan 19 | ||
| 100% Refund, Nonrestrictive Drop/Add Deadline1 | Aug 25 | Jan 20 | Jun 10 |
| Partial Refund, Restrictive Drop/Add Deadline2 | Aug 29 | Jan 23 | Jun 12 |
| University holiday (fall) | Sep 1 | ||
| Six-week grades due from faculty (noon) | Oct 1 | Feb 25 | |
| Students' Spring Break | Mar 16-20 | ||
| Deadline to file graduation application (for name to appear in the fall commencement program) | Nov 3 | ||
| Deadline to file graduation application (for name to appear in the spring commencement program) | Apr 1 | Apr 1 | |
| University holiday (summer) | Jun 19 | ||
| University holiday (summer) | Jul 3 | ||
| W Drop/Withdrawal Deadline3 | Nov 7 | Apr 10 | Jul 17 |
| Students' Fall Break | Nov 24-26 | ||
| University holiday (fall) | Nov 27-28 | ||
| Assigned W or F Drop/Withdrawal Deadline4 | Dec 1 | Apr 24 | Jul 24 |
| Pre-Finals Week | Dec 1-5 | Apr 27-May 1 | |
| Class work ends | Dec 5 | May 1 | Jul 31 |
| Final Examinations | Dec 8-12 | May 4-8 | |
| Commencement | Dec 12-13 | May 8-9 | |
| Grades due electronically from faculty (noon) | Dec 17 | May 13 | Aug 5 |
| University holiday (winter) | Dec 24-Jan 2 | ||
| Intersessions and Pre-Sessions | |||
| Fall Pre-Session | Aug 4-15 | ||
| Winter Intersession (Spring Pre-Session) | Dec 15-Jan 9 | ||
| Summer Pre-Session | May 18-Jun 5 | ||
| Summer 4-Week Parts of Term | |||
| First 4 Weeks | Jun 8-Jul 2 | ||
| Second 4 Weeks | Jul 6-31 |
- 1
Drop/Add and Withdrawal Deadline Details:
100% Refund, Nonrestrictive Drop/Add Deadline:
- add a course (nonrestrictive)
- drop a course with 100% refund and no grade
- 2
Partial Refund, Restrictive Drop/Add Deadline:
- add a course (requires drop/add card with instructor and advisor signatures)
- drop a course with partial refund and no grade
- 3
W Drop/Withdrawal Deadline
- drop a course with automatic grade of "W"
- withdraw from all courses with automatic grades of "W" (requires completed Withdrawal Form)
- 4
Assigned W or F Drop/Withdrawal Deadline:
- drop a course with an assigned grade of "W" or "F" by the instructor (requires completed Request to Drop a Course During the W or F Period form)
- withdraw from all classes with assigned grades of "W" or "F" by instructors (requires completed Withdrawal form)
2026-2027 (Tentative)
| Fall 2026 | Spring 2027 | Summer 2027 (main 8-week term) | |
|---|---|---|---|
| Late enrollment fee assessed after this date | Aug 17 | Jan 11 | Jun 7 |
| Class work begins | Aug 17 | Jan 11 | Jun 7 |
| University holiday (spring) | Jan 18 | ||
| 100% Refund, Nonrestrictive Drop/Add Deadline1 | Aug 24 | Jan 19 | Jun 9 |
| Partial Refund, Restrictive Drop/Add Deadline2 | Aug 28 | Jan 22 | Jun 11 |
| University holiday (fall) | Sep 7 | ||
| Six-week grades due from faculty (noon) | Sep 30 | Feb 24 | |
| Students' Spring Break | March 15-19 | ||
| Deadline to file graduation application (for name to appear in the fall commencement program) | Nov 2 | ||
| Deadline to file graduation application (for name to appear in the spring commencement program) | Apr 1 | Apr 1 | |
| University holiday (summer) | Jun 18 | ||
| University holiday (summer) | July 5 | ||
| W Drop/Withdrawal Deadline3 | Nov 6 | Apr 9 | Jul 16 |
| Students' Fall Break | Nov 23-25 | ||
| University holiday (fall) | Nov 26-27 | ||
| Assigned W or F Drop/Withdrawal Deadline4 | Nov 30 | Apr 23 | Jul 23 |
| Pre-Finals Week | Nov 30-Dec 4 | Apr 26-30 | |
| Class work ends | Dec 4 | Apr 30 | Jul 30 |
| Final Examinations | Dec 7-11 | May 3-7 | |
| Commencement | Dec 11-12 | May 7-8 | |
| Grades due electronically from faculty (noon) | Dec 16 | May 12 | Aug 4 |
| University holiday (winter) | Dec 24-Jan 1 | ||
| Intersessions and Pre-Sessions | |||
| Fall Pre-Session | Aug 3-14 | ||
| Winter Intersession (Spring Pre-Session) | Dec 14-Jan 8 | ||
| Summer Pre-Session | May 17-Jun 4 | ||
| Summer 4-Week Parts of Term | |||
| First 4 Weeks | Jun 7-Jul 2 | ||
| Second 4 Weeks | Jul 6-30 |
- 1
Drop/Add and Withdrawal Deadline Details:
100% Refund, Nonrestrictive Drop/Add Deadline:
- add a course (nonrestrictive)
- drop a course with 100% refund and no grade
- 2
Partial Refund, Restrictive Drop/Add Deadline:
- add a course (requires drop/add card with instructor and advisor signatures)
- drop a course with partial refund and no grade
- 3
W Drop/Withdrawal Deadline
- drop a course with automatic grade of "W"
- withdraw from all courses with automatic grades of "W" (requires completed Withdrawal Form)
- 4
Assigned W or F Drop/Withdrawal Deadline:
- drop a course with an assigned grade of "W" or "F" by the instructor (requires completed Request to Drop a Course During the W or F Period form)
- withdraw from all classes with assigned grades of "W" or "F" by instructors (requires completed Withdrawal form)