Important Dates and Deadlines for 2025
Here, you'll find all the important dates you need to plan your application and enrollment. Be sure to review the deadlines carefully to ensure you submit your application on time and complete all necessary steps for a smooth process. Whether you're applying for credit courses, specialized programs, or living on campus, this page will keep you on track for a successful summer at Yale. We look forward to welcoming you!
This calendar provides a summary of key deadlines as outlined in the Yale Summer Session Academic Regulations and the Yale College Undergraduate Regulations. Unless otherwise noted, all deadlines are 5 p.m. (EDT).
Students may not arrive late or depart early from any YSS program.
The 2025 Yale Summer Session application is open.
[date] 2025 Yale Summer Session Dates
Session A: May 26 - June 27, 2025
Session B: June 30 - August 1, 2025
Yale Summer Session Calendar with Pertinent Deadlines
Please note that dates are subject to change.
| Deadline | Session A | Session B |
|---|---|---|
| Visiting Students (on-campus) Application | Monday, March 31 | Monday, May 5 |
| Conservatory for Actors Application | Monday, March 31 | |
| Immunizations: Data Submission | Monday, April 14 | Monday, May 19 |
| Contact SAS for Accommodations | Monday, April 21 | Monday, May 19 |
| Immunizations: Compliance | Friday, May 2 | Friday, June 6 |
| Visiting Students (online-only courses) | Friday, May 2 | Friday, June 6 |
| Visiting Students Payments Due | Friday, May 2 | Friday, June 6 |
| Newly Admitted First-Years Application** | Friday, May 9 | Friday, May 23 |
| Yale College Students Application | Friday, May 9 | Friday, June 13 |
| Last Day to Change Courses | Friday, May 16 | Friday, June 20 |
| Yale College Payments Due | Friday, May 16 | Friday, June 20 |
| Housing Check-In | Sunday, May 25 | Sunday, June 29 |
| First Day of Classes | Monday, May 26 | Monday, June 30 |
| Drop a Course for a 100% Tuition Refund or Credit | Friday, May 30, at 5:00pm EDT | Friday, July 4, at 5:00pm EDT |
| Drop a Course for a 50% Tuition Refund or Credit*** | Friday, June 6, at 5:00pm EDT | Friday, July 11, at 5:00pm EDT |
| Drop a Course Without a "W" Mark on the Transcript | Wednesday, June 11, at 5:00pm EDT | Wednesday, July 16, at 5:00pm EDT |
| Convert a Course from a Letter Grade to the Credit/D/Fail Option or Withdraw from a Course**** | Friday, June 27, at 5:00pm EDT | Friday, August 1, at 5:00pm EDT |
| Last Day of Classes | Friday, June 27 | Friday, August 1 |
| Summer Colleges Close | Friday, June 27, at 6:00pm EDT | Saturday, August 2, at 9:00am EDT |
*Visiting international students attending YSS in New Haven must have a visa and must be enrolled full time. Students taking YSS courses for credit in New Haven must take two courses (2 credits total), with at least one course in-person, per session.
**Newly admitted Yale College first-year students may only take online courses in Session A.
***No course tuition will be refunded if a student drops a course or withdraws entirely from Yale Summer Session after Friday of the second week of the relevant five-week session at 5:00pm EDT.
****Please see the Student Handbook for eligibility criteria. To be eligible for the Credit/D/Fail option in Yale Summer Session courses in New Haven and online, a student must be enrolled in at least two courses in a single five-week session, Session A or Session B, at least one credit of which must remain at all times for a letter grade or the mark of Pass.
[point] For Yale Summer Session Programs Abroad visit Yale Study Abroad for program dates and all other program information.
Students are advised to review carefully the Yale Summer Session Student Handbook for the relevant academic regulations.