Columbia Climate School Academic Calendar

The Academic Calendar lays out key registration dates, exam and grade deadlines, university holidays, and school-wide events including Orientation and Class Day.

Dates are subject to change. It is the responsibility of students and faculty to review this page periodically for the most up-to-date information.

2026

Fall 2026 Term Dates
Full term:  September 8 – December 14 (classes) 
Subterm A: September 8 – October 23 
Subterm B: October 26 – December 14
 

2027

Spring 2027 Term Dates
Full term:  January 19 – May 3 (classes)   
Subterm A: January 19 – March 12 
Subterm B: March 22 – May 3 

Summer 2027 Term Dates (all summer dates tentative) 
Session X (full term): May 24 – August 13 
Session A: May 24 – July 2 
Session B: July 6 – August 13 

AY2025-2026 Academic Calendar

Fall term: September 2-December 8 (classes)
Subterm A: September 2-October 20 (classes) 
Subterm B: October 21-December 8 (classes)

AUGUST
Aug 25-28: New student orientation

SEPTEMBER 
Sep 1: Labor Day – University Holiday
Sep 2: First Day of Classes
Sep 12: Last day to Add a Class; Last day to receive tuition refund for Dropped Class (if enrolled over 18 credits); Last day to drop Subterm A class without appearing on transcript

OCTOBER
Sept 29: Last day to elect P/F, drop with W for Subterm A 
Oct 7: Last day to drop a full-term class without it appearing on transcript
Oct 29: Subterm A grades due
Oct 31: Last day to drop Subterm B classes without appearing on transcript

NOVEMBER
Nov 3: No Classes – Academic Holiday
Nov 4: Election Day – University Holiday
Nov 13: Last day to elect a class as Pass/Fail or drop with W for full-term class
Nov 17: Last day to elect P/F, drop with W for Subterm B 
Nov 19-21: Spring Registration Period for all Climate School students
Nov 24-25: Spring Registration Period for all Climate School students
Nov 26: No classes – Academic Holiday
Nov 27: University Holiday – Thanksgiving
Nov 28: University Holiday

DECEMBER
Dec 1-5: Spring Registration Period for all Climate School students
Dec 8: Last Day of Classes
Dec 9-11: Study Days
Dec 12-19: Final Exams

JANUARY
Jan 5: Fall grades due by at 9:30pm ET
Jan 5-16: Spring Registration Period for all Climate School students with restrictions lifted

Spring term: January 20 – May 4
Subterm A: January 20 – March 9
Subterm B: March 10 – May 4

JANUARY
Jan 19: Martin Luther King Jr. Day – University Holiday
Jan 20: First Day of Classes
Jan 30: Last day to Add a Class; Last day to drop Subterm A class without appearing on Transcript

FEBRUARY
Feb 16: Last day to elect P/F or drop with W for Subterm A 
Feb 24: Last day to drop full-term class without it appearing on transcript

MARCH
Mar 13: Last day to add or drop Subterm B classes without appearing on transcript
Mar 15: Subterm A grades due
Mar 16-20: Spring Recess – No classes 
Mar 26: Last day to elect a class as Pass/Fail or drop with W for full-term class

APRIL
Apr 10: Last day to elect P/F, drop with W for Subterm B

MAY
May 4: Last Day of Classes
May 5-7: Study Days
May 9-15: Final Exams
May 15: Spring grades due by 9:30pm for graduating students
May 15: Climate School Class Day
May 20: University Commencement
May 21: Spring grades due by 9:30pm for non-graduating students

Please see the table above for our complete 2026-2027 calendar from June 15, 2026 on.

Session X (full-term): May 25 - August 14
Session A: May 25 - July 3
Session B: July 6 - August 14

MAY

May 1: Last day to add CLMT 9010 (MS Climate Finance only)
May 25: Memorial Day – University Holiday 
May 26: First day of classes for Sessions A and X 

JUNE

Jun 1: Last day to add class for Sessions A and X (excluding CLMT 9010--see note for May 1 above), last day to drop CLMT 9010, last day to drop CLMT 9015, last day to drop Session A course without it appearing on transcript 
Jun 18: Last day to drop Session X course without it appearing on transcript (excluding CLMT 9010 and CLMT 9015)
Jun 19: Juneteenth – University Holiday 
Jun 22: Last day to withdraw or elect P/F for Session A Course 
 

JULY

Jul 3: Independence Day observed - University Holiday 
Jul 6: First day of classes for Session B 
Jul 10: Last day to add Session B course, last day to drop Session B course without it appearing on transcript
Jul 12: Session A grades due by 9:30pm
Jul 20: Last day to withdraw or elect P/F for Session X course

AUGUST

Aug 3: Last day to withdraw or elect P/F for Session B Course 
Aug 14: Last day of classes for Session B and X 
Aug 23: Sessions B and X grades due by 9:30pm