OU Online
Graduate Summer 2025
Academic Calendars
Online Summer OL1: May 12 to August 15 (14 Weeks)
Event/Activity |
Date |
|---|---|
| Application Deadline | April 28 |
| Classes Start | May 12 |
| Last day to add without the instructor’s permission | May 16 |
| Last day to drop & receive 100% refund | May 23 |
| Memorial Day Holiday: No Live Sessions | May 26 |
| Juneteenth Holiday: No Live Sessions | June 19 |
| Independence Day Holiday: No Live Sessions | July 4 |
| Classes End | August 15 |
| Grades Due | August 19 |
Online Summer OL2: May 12 to June 27 (7 Weeks)
Event/Activity | Date |
|---|---|
| Application Deadline | April 28 |
| Classes Start | May 12 |
| Last day to add without the instructor’s permission | May 13 |
| Last day to drop & receive 100% refund | May16 |
| Memorial Day Holiday: No Live Sessions | May 26 |
| Juneteenth Holiday: No Live Sessions | June 19 |
| Classes End | June 27 |
| Grades Due | July 1 |
Online Summer OL3: June 30 to August 15 (7 Weeks)
Event/Activity |
Date |
|---|---|
| Application Deadline | June 16 |
| Classes Start | June 30 |
| Last day to add without the instructor’s permission | July 2 |
| Independence Day Holiday: No Live Sessions | July 4 |
| Last day to drop & receive 100% refund | July 7 |
| Classes End | August 15 |
| Grades Due | August 19 |
Online Summer OL4: May 12 to July 3 (8 Weeks)
Event/Activity |
Date |
|---|---|
| Application Deadline | April 28 |
| Classes Start | May 12 |
| Last day to add without the instructor’s permission | May 14 |
| Last day to drop & receive 100% refund | May 16 |
| Memorial Day Holiday: No Live Sessions | May 26 |
| Juneteenth Holiday: No Live Sessions | June 19 |
| Classes End | July 3 |
| Grades Due | July 7 |
Online Summer OL5: May 12 to June 6 (4 Weeks)
Event/Activity |
Date |
|---|---|
| Application Deadline | April 28 |
| Classes Start | May 12 |
| Last day to add without the instructor’s permission | May 13 |
| Last day to drop & receive 100% refund | May 14 |
| Memorial Day Holiday: No Live Sessions | May 26 |
| Classes End | June 6 |
| Grades Due | June 10 |
Online Summer OL6: June 9 to July 3 (4 Weeks)
Event/Activity |
Date |
|---|---|
| Application Deadline | May 27 |
| Classes Start | June 9 |
| Last day to add without the instructor’s permission | June 10 |
| Last day to drop & receive 100% refund | June 11 |
| Juneteenth Holiday: No Live Sessions | June 19 |
| Classes End | July 3 |
| Grades Due | July 7 |
Online Summer OL7: July 7 to August 1 (4 Weeks)
Event/Activity |
Date |
|---|---|
| Application Deadline | June 23 |
| Classes Start | July 7 |
| Last day to add without the instructor’s permission | July 8 |
| Last day to drop & receive 100% refund | July 9 |
| Classes End | August 1 |
| Grades Due | August 5 |
Online Summer OL8: June 9 to August 1 (8 Weeks)
Event/Activity |
Date |
|---|---|
| Application Deadline | May 27 |
| Classes Start | June 9 |
| Last day to add without the instructor’s permission | June 11 |
| Last day to drop & receive 100% refund | June 13 |
| Juneteenth Holiday: No Live Sessions | June 19 |
| Independence Day Holiday: No Live Sessions | July 4 |
| Classes End | August 1 |
| Grades Due | August 5 |
OU Online
338 Cate Center Drive, Rm. 381
Norman, Oklahoma 73072
