Summer Session Academic Calendar
Summer Session 2026 key dates
- Three-week 1 Summer Session (June 1–June 19, 2026)
- Three-week 2 Summer Session (June 22–July 10, 2026)
- Three-week 3 Summer Session (July 13–31, 2026)
- Eight-week Summer Session (June 8–August 4, 2026)
- Six-week Summer Session (June 22–August 4, 2026)
- Summer Special Session 1 (May 26–June 26, 2026): Class dates vary by program
- Summer Special Session 2 (May 26–August 14, 2026): Class dates vary by program
Precollege Students: Please refer to the Precollege Summer Academic Calendar for Precollege dates and deadlines.
Three-week 1 Summer Session 2026
March 16, 2026
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, 2026
Financial aid deadline for Cornell students.
May 19, 2026
(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 1, 2026
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 2, 2026
(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 1–3, 2026
0% tuition liability for courses dropped during this period.
June 4–5, 2026
50% tuition liability for courses dropped during this period.
June 6, 2026
100% tuition liability for courses dropped on or after this date.
June 9, 20265
(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, 2026
No classes (Juneteenth).
Variable dates
Course evaluation system opens for students a few days before the end of class.
June 19, 2026
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 2026
March 16, 2026
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, 2026
Financial aid deadline for Cornell students.
June 8, 2026
(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 22, 2026
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 23, 2026
(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 22–24, 2026
0% tuition liability for courses dropped during this period.
June 25–26, 2026
50% tuition liability for courses dropped during this period.
June 27, 2026
100% tuition liability for courses dropped on or after this date.
June 30, 2026
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 3, 2026
No classes (Independence Day).
Variable dates
Course evaluation system opens for students a few days before the end of class.
July 10, 2026
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 2026
March 16, 2026
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, 2026
Financial aid deadline for Cornell students.
June 29, 2026
(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 13, 2026
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 14, 2026
(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 13–15, 2026
0% tuition liability for courses dropped during this period.
July 16–17, 2026
50% tuition liability for courses dropped during this period.
July 18, 2026
100% tuition liability for courses dropped on or after this date.
July 21, 2026
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.
July 31, 2026
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 2026
March 16, 2026
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, 2026
Financial aid deadline for Cornell students.
May 26, 2026
(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 8, 2026
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 10, 2026
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 8–10, 2026
0% tuition liability for courses dropped during this period.
June 11–12, 2026
50% tuition liability for courses dropped during this period.
June 13, 2026
100% tuition liability for courses dropped on or after this date.
June 19, 2026
No classes (Juneteenth).
July 3, 2026
No classes (Independence Day).
July 6, 2026
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.
July 31, 2026
Instruction ends.
Last day to withdraw (petition required).
Last day to withdraw (petition required).
August 3–4, 2026
Final exams will be held based on the final exam schedule.
Six-week Summer Session 2026
March 16, 2026
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, 2026
Financial aid deadline for Cornell students.
June 8, 2026
(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 22, 2026
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, 2026
(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 22–24, 2026
0% tuition liability for courses dropped during this period.
June 25–26, 2026
50% tuition liability for courses dropped during this period.
June 27, 2026
100% tuition liability for courses dropped on or after this date.
July 3, 2026
No classes (Independence Day).
July 13, 2026
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.
July 31, 2026
Instruction ends.
Last day to withdraw (petition required).
Last day to withdraw (petition required).
August 3–4, 2026
Final exams will be held based on the final exam schedule.
Summer Special Sessions 1 & 2, 2026
March 16, 2026
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, 2026
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.