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Dear [first],

Welcome to the 2026–27 academic year at �鶹��Ѱ�����Boulder! 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 (Aug. 20–Dec. 11, 2026). For other calendars, see our academic calendar webpage.*

Friday, Aug. 28

• 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.

Tuesday, Sept. 1

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

Friday, Sept. 4

• Last day to enroll in a 4-payment plan.
• Last day to��drop a class��without a W notation.
• Last day to change��variable credit hours & no-credit status.

Saturday, Sept. 5

• Last day to pay your tuition & fee bill.

Monday, Sept. 7

• Labor Day holiday (no classes; university closed)

Tuesday, Sept. 8

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

Thursday, Oct. 8

• Midsemester reading day (no classes).

Tuesday, Oct. 27

• Last day for class withdrawal; W notations will apply.
• Last day to .

Monday, Nov. 23–Friday, Nov. 27

• Fall break (no classes; university closed Nov. 26 & 27).

Friday, Dec. 4

• Last day of classes.
• Classes follow a Monday schedule.
• Last day to withdraw from the semester.
• Last day to submit the late class withdrawal petition form.��

Saturday, Dec. 5–Sunday, Dec. 6

• End of term reading days (no classes or exams).

Monday, Dec. 7–Friday, Dec. 11

• Final exams.

* If you’re enrolled in any class that doesn’t meet for the full semester, 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 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 | �鶹��Ѱ�����
303-492-6970 | registrar@colorado.edu