Academic Calendar
The Yale School of the Environment academic year schedule
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2025 - 2026 Academic Calendar
Subject to Change
Fall Term 2025 | |
|---|---|
| August 8 (Fri.) | International Student Orientation |
| August 11–14 (Mon.–Thu.) | Orientation events & MODs for all incoming students |
| August 18 (Mon.) | Fall 2025 course registration begins |
| August 18–21 (Mon.–Thu.) | Orientation events & MODs for all incoming students |
| August 26 (Tue.) | Orientation events for all incoming students Community Day for all YSE students |
| August 26 (Tues.) | Fall 2025 preferred course registration deadline |
| August 27 (Wed.) | Fall full-term and Fall-1 courses begin |
| September 1 (Mon.) | Labor Day; classes DO NOT meet (make-up classes are managed separately by each course and are not centrally scheduled) |
| September 9 (Tues.) | Last day to add a Fall-1 or full-semester course |
| September 16 (Tues.) | Last day to drop a Fall-1 course without penalty |
| October 3 (Fri.) | Fall-1 courses end |
| October 6 (Mon.) | Fall-1 final examinations begin |
| October 10 (Fri.) | Fall-1 final examinations end |
| October 14 (Tues.) | October Recess begins, 7:30 p.m. |
| October 17 (Fri.) | Last day to add a Fall-2 course |
| October 20 (Mon.) | Fall-2 classes begin, full-term classes resume, 8:20 a.m. |
| October 24 (Fri.) | Last day to drop a Fall-2 or full-semester course without penalty |
| October 24 (Fri.) | Mid-semester date |
| November 21 (Fri.) | November Recess begins, 7:30 p.m. |
| December 1 (Mon.) | Classes resume, 8:20 a.m. |
| December 5 (Fri.) | Last day to withdraw from a Fall-2 or full-semester course with penalty, 5:00 p.m. |
| December 5 (Fri.) | Fall-2 and full-term courses end; Reading Period begins, 5:30 p.m. |
| December 11 (Thu.) | Final examinations begin, 7:00 p.m. |
| December 17 (Wed.) | Fall semester ends; Winter Recess begins |
Spring Term 2026 | |
| January 5 (Mon.) | Spring 2026 course registration begins |
| January 11 (Sun.) | Spring 2026 preferred course registration deadline |
| January 12 (Mon.) | Spring-1 and Spring full-term courses begin |
| January 19 (Mon.) | Martin Luther King Jr. Day; classes DO NOT meet (make-up classes are managed separately by each course and are not centrally scheduled) |
| January 26 (Mon.) | Last day to add a Spring-1 or full-semester course |
| January 30 (Fri.) | Last day to drop from a Spring-1 course without penalty, 5:00 p.m. |
| February 20 (Fri.) | Spring-1 courses end, 7:30 p.m. |
| February 23 (Mon.) | Spring-1 final examinations begin |
| February 27 (Fri.) | Spring-1 final examinations end |
| March 2 (Mon.) | Spring-2 courses begin |
| March 6 (Fri.) | Last day to drop a Spring-2 or full-semester course without penalty |
| March 6 (Fri.) | Mid-semester date: Spring Recess begins, 7:20 p.m. |
| March 23 (Mon.) | Courses resume, 8:30 a.m. |
| April 24 (Fri.) | Last day to withdraw from Spring-2 or full-term course with penalty, 5:00 p.m. |
| April 24 (Fri.) | Courses end; Reading Period begins, 5:30 p.m. |
| April 30 (Thu.) | Final examinations begin, 7:00 p.m. |
| May 6 (Wed.) | Final examinations end; Spring-2 and Spring full-semester ends |
| May 18 (Mon.) | University Commencement |
2026 - 2027 Academic Calendar
Subject to Change
Fall Term 2026 | |
|---|---|
| August 14 (Fri.) | International Student Orientation |
| August 17-20 (Mon.–Thu.) | Orientation events & MODs for all incoming students |
| August 24 (Mon.) | Fall 2026 course registration begins |
| August 24–27 (Mon.–Thu.) | Orientation events & MODs for all incoming students |
| August 25–28 (Tues.–Fri.) | Executive Master Environmental Management/Master of Forestry Intensive week |
| September 1 (Tue.) | Orientation events for all incoming students Community Day for all YSE students |
| September 1 (Tues.) | Fall 2026 preferred course registration deadline |
| September 2 (Wed.) | Fall full-term and Fall-1 courses begin |
| September 7 (Mon.) | Labor Day; classes DO NOT meet (make-up classes are managed separately by each course and are not centrally scheduled) |
| September 15 (Tues.) | Last day to add a Fall-1 or full-semester course |
| September 22 (Tues.) | Last day to drop a Fall-1 course without penalty |
| October 9 (Fri.) | Fall-1 courses end |
| October 12 (Mon.) | Fall-1 final examinations begin |
| October 16 (Fri.) | Fall-1 final examinations end |
| October 20 (Tues.) | October Recess begins, 7:30 p.m. |
| October 20 (Tues.) | Mid-semester date/ Last day to drop a full-semester course without penalty |
| October 23 (Fri.) | Last day to add a Fall-2 course |
| October 26 (Mon.) | Fall-2 classes begin, full-term classes resume, 8:20 a.m. |
| November 9 (Mon.) | Last day to drop a Fall-2 course without penalty |
| November 20 (Fri.) | November Recess begins, 7:30 p.m. |
| November 30 (Mon.) | Classes resume, 8:20 a.m. |
| December 11 (Fri.) | Last day to withdraw from a Fall-2 or full-semester course with penalty, 5:00 p.m. |
| December 11 (Fri.) | Fall-2 and full-term courses end; Reading Period begins, 5:30 p.m. |
| December 15 (Tues.) | Final examinations begin, 9:00 a.m. |
| December 22 (Tues.) | Fall semester ends; Winter Recess begins |
Spring Term 2027 | |
| January 4 (Mon.) | Spring 2027 course registration begins |
| January 10 (Sun.) | Spring 2027 preferred course registration deadline |
| January 11 (Mon.) | Spring-1 and Spring full-term courses begin |
| January 18 (Mon.) | Martin Luther King Jr. Day; classes DO NOT meet (make-up classes are managed separately by each course and are not centrally scheduled) |
| January 25 (Mon.) | Last day to add a Spring-1 or full-semester course |
| February 1 (Mon.) | Last day to drop from a Spring-1 course without penalty, 5:00 p.m. |
| February 19 (Fri.) | Spring-1 courses end, 7:30 p.m. |
| February 22 (Mon.) | Spring-1 final examinations begin |
| February 26 (Fri.) | Spring-1 final examinations end |
| March 1 (Mon.) | Spring-2 courses begin |
| March 5 (Fri.) | Last day to drop a Spring-2 or full-semester course without penalty |
| March 5 (Fri.) | Mid-semester date: Spring Recess begins, 7:20 p.m. |
| March 15 (Mon.) | Last day to drop a Spring-2 course without penalty |
| March 22 (Mon.) | Courses resume, 8:30 a.m. |
| April 30 (Fri.) | Last day to withdraw from Spring-2 or full-term course with penalty, 5:00 p.m. |
| April 30 (Fri.) | Courses end; Reading Period begins, 5:30 p.m. |
| May 5 (Wed.) | Final examinations begin, 7:00 p.m. |
| May 12 (Wed.) | Final examinations end; Spring-2 and Spring full-semester ends |
| May 24 (Mon.) | University Commencement |