For other academic calendars, refer to the Academic Calendar section of the COS webpage.
Fall Semester 2025
August 11, 2025 - December 16, 2025
Academic Calendar
| Date |
Event |
| Sept 3, 2024 |
WEB Admission Applications Begin for Summer/Fall 2025 at www.cos.edu |
| Starting March 24 |
Fall WEB Registration for Priority Registration/Continuing Students |
| Apr 24 - 25 |
Fall Registration for Students who have completed STEPS |
| April 28 |
Fall Registration for Students who have completed ALL Matriculation |
| April 29 |
Fall Registration for Early College High Schools (VTEC/UPHS) |
| April 30 |
Fall WEB OPEN Registration for Eligible Students |
| April 30 |
Registration for Students on Probation |
| May 5 |
Summer/Fall Registration for Concurrently Enrolled High School Students |
| May 12 |
Summer Registration for Students who have completed 100 or more units at COS |
| July 1 |
Payment Deadline: Students must pay fall fees by July 1st or 2 weeks after registration (whichever is later) to avoid the possibility of being dropped from classes |
| July 21 |
Fall Registration for Students who have completed 100 or more units at COS |
| Aug 8 |
FLEX Day; Registration is available at www.cos.edu |
| Aug 11 |
Fall Semester Begins |
| Aug 11 - 17 |
Fall Late WEB Registration With Instructor Add Codes |
| Aug 24 |
Last Day to Drop a Class Without a "W" and be Eligible for a Refund |
| Sept 1 |
Labor Day Holiday (no classes) |
| Oct 16 |
Last Day to File for Associate Degree for Fall 2025 |
| Oct 17 |
Fall Final Drop Date - Drop Classes on the WEB; this drop date does not apply to short-term classes as each short-term class has its own drop date |
| Nov 11 |
Veterans' Day Holiday (no classes) |
| Nov 24 - 28 |
Thanksgiving Holiday (no classes and offices closed) |
| Dec 10 - 16 |
Fall Final Exams |
| Dec 16 |
Fall Semester Ends |
| Dec 16 |
Last Day to Make Up Incomplete "I" Grades for Fall 2024 semester |
| Dec 17 - Jan 11 |
Break Between Semesters |
Spring Semester 2026
January 12, 2026 - May 20, 2026
Academic Calendar
| Date |
Event |
| Sept 2, 2025 |
WEB Admission Applications Begin for Spring 2026 at www.cos.edu |
| Starting Oct. 27 |
Spring WEB Registration for Priority Registration/Continuing Students |
| Nov 17 |
Spring Registration for students who have completed ALL matriculation |
| Nov 18 |
Spring Registration for Early College High Schools (VTEC/UPHS) |
| Nov. 19 |
Spring WEB OPEN Registration for Eligible Students |
| Nov. 19 |
Registration for Students on Probation |
| Dec 1 |
Spring WEB Registration for Concurrently Enrolled High School Students |
| Jan 2 |
Spring Registration for Students who have completed 100 or more units at COS |
| Jan 9 |
FLEX Day; Registration is available at www.cos.edu |
| Jan 12 |
Spring Semester Begins |
| Jan 12 - 18 |
Spring Late WEB Registration With Instructor Add Codes |
| Jan 19 |
Martin Luther King Jr. Holiday; Registration is available at www.cos.edu |
| Jan 25 |
Last Day to Drop a Class Without a "W" and Eligible for a Refund |
| Feb 13 |
Lincoln Day Holiday (no classes) |
| Feb 16 |
Presidents' Day Holiday (no classes) |
| Feb 19 |
Last Day to File for Associate Degree for Spring 2026 |
| Mar 20 |
Spring Final Drop Date - Drop Classes on the WEB; this drop date does not apply to short-term classes as each short-term class has its own drop date |
| Mar 30 - April 3 |
Spring Break (no classes); Offices open March 30 - April 1; closed April 2 - 3 |
| May 14 - 20 |
Spring Final Exams |
| May 20 |
Spring Semester Ends; Last Day to Make Up Incomplete “I” Grades for Spring 2025 Semester |
| May 21 |
Commencement Ceremony |