Spring 2025 Main Campus Academic Dates & Deadlines

As you prepare for the Spring 2025 semester, please keep in mind the following key dates. Deadlines occur at 11:59 p.m. Mountain Time unless otherwise noted.

These dates apply to Main Campus classes that follow the full-semester start and end dates (Jan. 13–May 7, 2025). For other calendars, see our academic calendar webpage.*

(Please note CU Boulder’s new academic calendar takes effect Fall 2025. For more information, see the revised academic calendar.)

Monday, Jan. 6

• Financial aid begins applying to the bill for students starting classes on Jan.13.

Thursday, Jan. 9

• First tuition and fee bills will be available online in Buff Portal.

Monday, Jan. 13

• First day of classes.
• Last day to submit a private scholarship check to avoid late fees.

Monday, Jan. 20

• Martin Luther King Jr. holiday (no classes; university closed).

Wednesday, Jan. 22

• Last day to add a class, swap a class or join a waitlist for a closed class.
• Last day to be automatically enrolled from a waitlist.

Wednesday, Jan. 29

• Last day to drop a class without a W grade.
• Last day to withdraw from the semester without tuition charges and W grades.
• Last day to change variable credit hours or no-credit status.

Monday, Feb. 3

• Waitlists are canceled. Students still on the waitlist lose access to that class's online materials, but may be eligible to reserve a seat in the course the next time it's offered.

Tuesday, Feb. 4

• Last day to enroll in a payment plan.

Wednesday, Feb. 5

• Last day to pay your tuition & fee bill in full unless you’ve signed up for a payment plan. See payment options.

Thursday, Feb. 13

• Last day to enroll in or waive student health insurance coverage.

Friday, March 21

• Last day to drop a class.
• Last day to change pass/fail grade mode for a student-option class.

Monday, March 24–Friday, March 28

• Spring break (no classes; university closed March 28).

Thursday, May 1

• Last day of classes.
• Last day to withdraw from the semester.

Saturday, May 3–Wednesday, May 7

• Final exams.

* If you’re enrolled in any class that doesn’t meet for the full 16 weeks, it’s a special session class. Special session classes follow different deadlines than full-semester classes (view the special session calendar). To check the session and view key dates for one of your classes, go to the Your Classes card in Buff Portal. Select a class to view session information and the “Drop/Swap/Edit This Class” button for related deadlines.

Office of the Registrar | University of Colorado Boulder
303-492-6970 | registrar@colorado.edu