Summer Session Academic Calendar
Summer Session 2025 key dates
- Three-week 1 Summer Session (June 2–June 20, 2025)
- Three-week 2 Summer Session (June 23–July 11, 2025)
- Three-week 3 Summer Session (July 14–August 1, 2025)
- Eight-week Summer Session (June 9–August 5, 2025)
- Six-week Summer Session (June 23–August 5, 2025)
- Summer Special Session 1 (May 27–June 27, 2025): Class dates vary by program
- Summer Special Session 2 (May 27–August 15, 2025): Class dates vary by program
Three-week 1 Summer Session 2025
March 17, 2025
Registration and enrollment begin.
Online enrollment available for Cornell students via the Student Center.
Online registration available for visiting students via SCE's class roster.
Online enrollment available for Cornell students via the Student Center.
Online registration available for visiting students via SCE's class roster.
May 1, 2025
Financial aid deadline for Cornell students.
May 19, 2025
(11:59 p.m. ET)
(11:59 p.m. ET)
Registration deadline for visiting students.
Note: All tuition and fees must be paid in full in order for registration and enrollment to be complete.
Note: All tuition and fees must be paid in full in order for registration and enrollment to be complete.
June 2, 2025
Instruction begins.
Note: All tuition and fees must be paid in full in order for enrollment to be complete.
Note: All tuition and fees must be paid in full in order for enrollment to be complete.
June 3, 2025
(11:59 p.m. ET)
(11:59 p.m. ET)
Last day to add a class or change credit hours.
Requests to add a class beyond this date require a petition.
Requests to add a class beyond this date require a petition.
June 2–4, 2025
0% tuition liability for courses dropped during this period.
June 5–6, 2025
50% tuition liability for courses dropped during this period.
June 7, 2025
100% tuition liability for courses dropped on or after this date.
June 10, 2025
(11:59 p.m. ET)
(11:59 p.m. ET)
Last day to drop a class without a petition and without the letter "W" appearing on your transcript.
Last day to change grading basis.
Last day to change grading basis.
June 19, 2025
No classes (Juneteenth).
Variable dates
Course evaluation system opens for students a few days before the end of class.
June 20, 2025
Instruction ends.
Final exams will be held on this date, at a time to be arranged by your instructor.
Last day to withdraw (petition required).
Final exams will be held on this date, at a time to be arranged by your instructor.
Last day to withdraw (petition required).
Three-week 2 Summer Session 2025
March 17, 2025
Registration and enrollment begin.
Online enrollment available for Cornell students via the Student Center.
Online registration available for visiting students via SCE's class roster.
Online enrollment available for Cornell students via the Student Center.
Online registration available for visiting students via SCE's class roster.
May 1, 2025
Financial aid deadline for Cornell students.
June 9, 2025
(11:59 p.m. ET)
(11:59 p.m. ET)
Registration deadline for visiting students.
Note: All tuition and fees must be paid in full in order for registration and enrollment to be complete.
Note: All tuition and fees must be paid in full in order for registration and enrollment to be complete.
June 23, 2025
Instruction begins.
Note: All tuition and fees must be paid in full in order for enrollment to be complete.
Note: All tuition and fees must be paid in full in order for enrollment to be complete.
June 24, 2025
(11:59 p.m. ET)
(11:59 p.m. ET)
Last day to add a class or change credit hours.
Requests to add a class beyond this date require a petition.
Requests to add a class beyond this date require a petition.
June 23–25, 2025
0% tuition liability for courses dropped during this period.
June 26–27, 2025
50% tuition liability for courses dropped during this period.
June 28, 2025
100% tuition liability for courses dropped on or after this date.
July 1, 2025
Last day to drop a class without a petition and without the letter “W” appearing on your transcript.
Last day to change grading basis.
Last day to change grading basis.
July 4, 2025
No classes (Independence Day).
Variable dates
Course evaluation system opens for students a few days before the end of class.
July 11, 2025
Instruction ends.
Final exams will be held on this date, at a time to be arranged by your instructor.
Last day to withdraw (petition required).
Final exams will be held on this date, at a time to be arranged by your instructor.
Last day to withdraw (petition required).
Three-week 3 Summer Session 2025
March 17, 2025
Registration and enrollment begin.
Online enrollment available for Cornell students via the Student Center.
Online registration available for visiting students via SCE's class roster.
Online enrollment available for Cornell students via the Student Center.
Online registration available for visiting students via SCE's class roster.
May 1, 2025
Financial aid deadline for Cornell students.
June 30, 2025
(11:59 p.m. ET)
(11:59 p.m. ET)
Registration deadline for visiting students.
Note: All tuition and fees must be paid in full in order for registration and enrollment to be complete.
Note: All tuition and fees must be paid in full in order for registration and enrollment to be complete.
July 14, 2025
Instruction begins.
Note: All tuition and fees must be paid in full in order for enrollment to be complete.
Note: All tuition and fees must be paid in full in order for enrollment to be complete.
July 15, 2025
(11:59 p.m. ET)
(11:59 p.m. ET)
Last day to add a class or change credit hours.
Requests to add a class beyond this date require a petition.
Requests to add a class beyond this date require a petition.
July 14–16, 2025
0% tuition liability for courses dropped during this period.
July 17–18, 2025
50% tuition liability for courses dropped during this period.
July 19, 2025
100% tuition liability for courses dropped on or after this date.
July 22, 2025
Last day to drop a class without a petition and without the letter "W" appearing on your transcript.
Last day to change grading basis.
Last day to change grading basis.
Variable dates
Course evaluation system opens for students a few days before the end of class.
August 1, 2025
Instruction ends.
Final exams will be held on this date, at a time to be arranged by your instructor.
Last day to withdraw (petition required).
Final exams will be held on this date, at a time to be arranged by your instructor.
Last day to withdraw (petition required).
Eight-week Summer Session 2025
March 17, 2025
Registration and enrollment begin.
Online enrollment available for Cornell students via the Student Center.
Online registration available for visiting students via SCE's class roster.
Online enrollment available for Cornell students via the Student Center.
Online registration available for visiting students via SCE's class roster.
May 1, 2025
Financial aid deadline for Cornell students.
May 27, 2025
(11:59 p.m. ET)
(11:59 p.m. ET)
Registration deadline for visiting students.
Note: All tuition and fees must be paid in full in order for registration and enrollment to be complete.
Note: All tuition and fees must be paid in full in order for registration and enrollment to be complete.
June 9, 2025
Instruction begins.
Note: All tuition and fees must be paid in full in order for enrollment to be complete.
Note: All tuition and fees must be paid in full in order for enrollment to be complete.
June 11, 2025
Last day to add a class or change credit hours.
Requests to add a class beyond this date require a petition.
Requests to add a class beyond this date require a petition.
June 9–11, 2025
0% tuition liability for courses dropped during this period.
June 12–13, 2025
50% tuition liability for courses dropped during this period.
June 14, 2025
100% tuition liability for courses dropped on or after this date.
June 19, 2025
No classes (Juneteenth).
July 4, 2025
No classes (Independence Day).
July 7, 2025
Last day to drop a class without a petition and without the letter “W” appearing on your transcript.
Last day to change grading basis.
Last day to change grading basis.
Variable dates
Course evaluation system opens for students a few days before the end of class.
August 1, 2025
Instruction ends.
Last day to withdraw (petition required).
Last day to withdraw (petition required).
August 4–5, 2025
Final exams will be held based on the final exam schedule.
Six-week Summer Session 2025
March 17, 2025
Registration and enrollment begin.
Online enrollment available for Cornell students via the Student Center.
Online registration available for visiting students via SCE's class roster.
Online enrollment available for Cornell students via the Student Center.
Online registration available for visiting students via SCE's class roster.
May 1, 2025
Financial aid deadline for Cornell students.
June 9, 2025
(11:59 p.m. ET)
(11:59 p.m. ET)
Registration deadline for visiting students.
Note: All tuition and fees must be paid in full in order for registration and enrollment to be complete.
Note: All tuition and fees must be paid in full in order for registration and enrollment to be complete.
June 23, 2025
Instruction begins.
Note: All tuition and fees must be paid in full in order for enrollment to be complete.
Note: All tuition and fees must be paid in full in order for enrollment to be complete.
June 25, 2025
(11:59 p.m. ET)
(11:59 p.m. ET)
Last day to add a class or change credit hours.
Requests to add a class beyond this date require a petition.
Requests to add a class beyond this date require a petition.
June 23–25, 2025
0% tuition liability for courses dropped during this period.
June 26–27, 2025
50% tuition liability for courses dropped during this period.
June 28, 2025
100% tuition liability for courses dropped on or after this date.
July 4, 2025
No classes (Independence Day).
July 14, 2025
Last day to drop a class without a petition and without the letter “W” appearing on your transcript.
Last day to change grading basis.
Last day to change grading basis.
Variable dates
Course evaluation system opens for students a few days before the end of class.
August 1, 2025
Instruction ends.
Last day to withdraw (petition required).
Last day to withdraw (petition required).
August 4–5, 2025
Final exams will be held based on the final exam schedule.
Summer Special Sessions 1 & 2, 2025
March 17, 2025
Registration and enrollment begin.
Online enrollment available for Cornell students via the Student Center.
Online registration available for visiting students via SCE's class roster.
Online enrollment available for Cornell students via the Student Center.
Online registration available for visiting students via SCE's class roster.
May 1, 2025
Financial aid deadline for Cornell students.
Variable registration deadlines for visiting students
For visiting students, your registration deadline is 14 calendar days prior to the start date of your class.
For example, if your class begins on June 1, your registration deadline is 11:59 p.m. on May 17.
Note: All tuition and fees must be paid in full in order for registration and enrollment to be complete.
For example, if your class begins on June 1, your registration deadline is 11:59 p.m. on May 17.
Note: All tuition and fees must be paid in full in order for registration and enrollment to be complete.
Variable registration deadlines for Cornell students
For students currently registered in a Cornell degree program, your enrollment deadline varies as follows:
- For classes up to 35 calendar days in duration: Your enrollment deadline is 2 days after the start date of your class.
For example, if your class begins on June 1, your enrollment deadline is 11:59 p.m. on June 2. - For classes 36 or more calendar days in duration: Your deadline is 3 days after the start date of your class.
For example, if your class begins on June 1, your enrollment deadline is 11:59 p.m. on June 3.
Variable drop and course change deadlines
Drop and course change deadlines for your class can be found in Student Center by clicking on the "Deadlines" icon located above your class schedule.
Day 1–3 of class
0% tuition liability for courses dropped during this period.
Day 4–5 of class
50% tuition liability for courses dropped during this period.
Day 6 of class
100% tuition liability for courses dropped on or after this date.
Variable dates
Last day of instruction and final exam dates vary based on class/program dates and length.
The last day to withdraw with a petition is the last day of instruction.
The last day to withdraw with a petition is the last day of instruction.