Oregon State Academic Calendar 2026‑2027: Important Dates

The Oregon State Academic Calendar 2026‑2027 is your all-in-one guide for every important deadline, from enrollment and payment due dates, add/drop windows, to campus holidays and final exam schedules.

Oregon State University follows a quarter system, with four terms of roughly 11 weeks of instruction plus one week for finals, ensuring a balanced, compact academic rhythm.

• Fall: late September to mid‑December (11 instructional weeks + finals).
• Winter: January to late March
• Spring: late March to mid‑June (11 instructional weeks + finals)
• Summer: Oregon State offers a flexible Summer Session with multiple term options.

Whether you’re planning your Fall quarter class load, jumping into a Summer block, or getting ready for finals, the Oregon State Academic Calendar 2026‑2027 ensures all your dates and deadlines are clearly mapped, helping you thrive at Oregon State University.

Oregon State Academic Calendar Winter 2027

1. Winter Term classes begin on Monday, January 4, 2027.
2. Last day to drop a Winter course (100% tuition refund) is on Sunday, January 10, 2027.
3. Last day to add a Winter course online without department approval is on Sunday, January 10, 2027.
4. Last day to audit a Winter course is on Friday, January 15, 2027.
5. Last day to add a Winter term course online with department approval is on Sunday, January 17, 2027.
6. Martin Luther King Jr. Day is on Monday, January 18, 2027.
7. Last day to withdraw from a Winter course (50% tuition refund) is on Sunday, January 24, 2027.
8. Winter Term dates run from Monday, January 4, 2027 to Friday, March 19, 2027.
9. Last day to change the grading basis of a Winter course (by noon) is on Friday, February 19, 2027.
10. Last day to withdraw from a Winter course (no refunds available) is on Friday, February 19, 2027.
11. Spring priority registration begins on Monday, February 22, 2027.
12. Winter Term classes end on Friday, March 12, 2027.
13. Last day to withdraw from Winter term is on Friday, March 12, 2027.
14. Winter finals week begins on Monday, March 15, 2027.
15. Winter Term grades are available online on Wednesday, March 24, 2027.

Oregon State Academic Calendar Spring 2027

1. Spring Term Grades are available online on Wednesday, June 17, 2026.
2. Spring Classes begin on Monday, March 29, 2027.
3. Last day to add a Spring course online without department approval is on Sunday, April 4, 2027.
4. Last day to drop a Spring course (100% tuition refund) is on Sunday, April 4, 2027.
5. Last day to audit a Spring course is on Friday, April 9, 2027.
6. Last day to add a Spring term course online with department approval is on Sunday, April 11, 2027.
7. Last day to withdraw from a Spring course (50% tuition refund) is on Sunday, April 18, 2027.
8. Last day to change the grading basis of a Spring course (by noon) is on Friday, May 14, 2027.
9. Last day to withdraw from a Spring course (no refunds available) is on Friday, May 14, 2027.
10. Memorial Day is on Monday, May 31, 2027.
11. Spring Term classes end on Friday, June 4, 2027.
12. Last day to withdraw from Spring Term is on Friday, June 4, 2027.
13. Spring Finals Week begins on Monday, June 7, 2027.
14. Spring Term ends on Friday, June 11, 2027.
15. Commencement Day is on Saturday, June 12, 2027.
16. Commencement Day – Cascades is on Sunday, June 13, 2027.
17. Spring Term Grades are available online on Wednesday, June 16, 2027.

For more on the Oregon State Academic Calendar 2026-2027, visit the Oregon State University Calendar website.