Academic Calendar
Colorado School of Mines
This page is where you will find important dates and deadlines for the academic year. The Academic Calendar Committee determines dates that are posted. If there are dates that are missing or if you have questions about the academic calendar please email registrar@mines.edu.
Spring 2025
JANUARY 6, 2025 – START SPRING 16-WK & ONLINE ONLY FIRST 8-WK SESSION
Classes begin for the 16-week sessions and the online only first 8-week session.
JANUARY 15, 2025 – LAST DAY TO ADD & DROP CLASSES FOR 16-WK SESSION & FIRST 8-WK SESSIONS
Last day to drop courses with a 100% refund, change course sections, request courses for no credit, complete Registration Action Forms, add or drop waitlists, and authorize College Opportunity Fund (COF). Dropped courses do not appear on the transcript.
JANUARY 20, 2025 – MARTIN LUTHER KING DAY HOLIDAY
Campus is closed.
JANUARY 22, 2025 – CENSUS DAY
JANUARY 23, 2025 – TERM BILL DUE DATE
Tuition payment due.
JANUARY 28 & 29, 2025 – CAREER DAYS
No-Assessment Days.
FEBRUARY 17 & 18, 2025 – PRESIDENTS’ DAY BREAK
No-Class Days. Campus is open.
FEBRUARY 20, 2025 – LAST COURSE WITHDRAWAL FOR ONLINE ONLY FIRST 8-WK SESSION
Last day to withdraw from courses in the online only first 8-week session. A student can withdraw from a class before or on the withdrawal date; no refund is given and the course does appear on the transcript with a grade of “W”.
MARCH 3, 2025 – MIDTERM GRADES DUE
MARCH 4, 2025 – CLASSES END FOR ONLINE ONLY FIRST 8-WK SESSION
MARCH 10, 2025 – CLASSES START FOR ONLINE ONLY SECOND 8-WK SESSION
Classes begin for online only second 8-week session.
MARCH 15-23, 2025 – SPRING BREAK
MARCH 17, 2025 – FINAL GRADES DUE FOR ONLINE ONLY FIRST 8-WK SESSION
MARCH 17, 2025 – LAST DAY TO ADD & DROP ONLINE ONLY SECOND 8-WK SESSION
MARCH 31-APRIL 4, 2025 – REGISTRATION FOR SUMMER & FALL TERMS
Registration times during the week of registration are assigned by a student’s class level.
APRIL 11, 2025 – LAST COURSE WITHDRAWAL FOR 16-WK SESSION (EXCLUDES ONLINE COURSES)
Last day to withdraw from courses in the 16-week session. A student can withdraw from a class before or on the withdrawal date; no refund is given and the course does appear on the transcript with a grade of “W”.
APRIL 11-13, 2025 – E DAYS
No assessment outside of scheduled class time Thursday and Friday. Friday is a non-class day. No assessment day on Monday, April 14, 2025.
APRIL 22, 2025 – LAST COURSE WITHDRAWAL FOR ONLINE ONLY SECOND 8-WK SESSION
Last day to withdraw from courses for online only second 8-week session. A student can withdraw from a class before or on the withdrawal date; no refund is given and the course does appear on the transcript with a grade of “W”.
APRIL 28-30, 2025 – LAST WEEK OF CLASS
No-Exams.
APRIL 30, 2025 – CLASSES END FOR 16-WK SESSION
MAY 1, 2025 – REVIEW DAY
No-Class Day. Campus Open.
MAY 7, 2025 – CLASSES END FOR SECOND ONLINE ONLY 8-WK SESSION
MAY 2-3, MAY 5-7, 2025 – FINAL EXAMS
MAY 8 & 9, 2025 – COMMENCEMENT
Separate undergraduate and graduate ceremonies.
MAY 9, 2025 – SEMESTER ENDS
MAY 12, 2025 – FINAL GRADES DUE FOR ALL 16-WK & SECOND ONLINE ONLY 8-WK SESSIONS
MAY 15, 2025 – FINAL GRADES AVAILABLE ON TRANSCRIPT
Summer 2025
MAY 12, 2025 – START SUMMER 14-WK SESSION & FIRST 6-WK SESSION
Classes begin for the 14-week and first 6-week sessions.
MAY 16, 2025 – CENSUS DAY
MAY 16, 2025 – LAST DAY TO ADD & DROP SUMMER 14-WK SESSION & FIRST 6-WK SESSION
Last day to add or drop courses with a 100% refund, change course sections, request courses for no credit, complete Registration Action Forms, add or drop waitlists, and authorize College Opportunity Fund (COF). Dropped courses do not appear on the transcript.
Note: Second 6-week and 8-week summer sessions have their own add/drop deadlines listed on the academic calendar below.
MAY 20, 2025 – TERM BILL DUE DATE
Tuition is due.
MAY 26, 2025 – MEMORIAL DAY
Campus closed.
JUNE 6, 2025 – LAST COURSE WITHDRAWAL FOR FIRST 6-WK SESSION
Last day to withdraw from courses in the first 6-week session. A student can withdraw from a class before or on the withdrawal date; no refund is given and the course does appear on the transcript with a grade of “W”.
June 19, 2025 – JUNETEENTH
Campus closed.
JUNE 20, 2025 – CLASSES END FOR FIRST 6-WK SESSION
JUNE 23, 2025 – FINAL GRADES DUE FOR FIRST 6-WK SESSION
JUNE 23, 2025 – START SUMMER 8-WK AND SECOND 6-WK SESSION
Classes begin for the 8-week and second 6-week sessions.
JUNE 27, 2025 – LAST DAY TO ADD/DROP SECOND 6-WK SESSION
Last day to add or drop courses for the second 6-week session only with a 100% refund. Dropped courses do not appear on the transcript.
JUNE 30, 2025 – LAST DAY TO ADD/DROP 8-WK SESSION
Last day to add and/or drop courses for the 8-week session only with a 100% refund. Dropped courses do not appear on the transcript.
JULY 4, 2025 – INDEPENDENCE DAY HOLIDAY
Campus closed.
JULY 18, 2025 – LAST COURSE WITHDRAWAL FOR SECOND 6-WK SESSION
Last day to withdraw from courses in the second 6-week session. A student can withdraw from a class before or on the withdrawal date; no refund is given and the course does appear on the transcript with a grade of “W”.
AUGUST 1, 2025 – LAST COURSE WITHDRAWAL FOR 14-WK & 8-WK SESSION
Last day to withdraw from courses in the 14-week and 8-week sessions. A student can withdraw from a class before or on the withdrawal date; no refund is given and the course does appear on the transcript with a grade of “W”.
AUGUST 1, 2025 – CLASSES END FOR SECOND 6-WK SESSION
AUGUST 4, 2025 – FINAL GRADES DUE FOR SECOND 6-WK SESSION
AUGUST 15, 2025 – CLASSES END FOR 8-WK SESSION
AUGUST 15, 2025 – CLASSES END FOR 14-WK SESSION
AUGUST 15, 2025 – SEMESTER ENDS
AUGUST 18, 2025 – FINAL GRADES DUE FOR 14-WK SESSION AND 8-WK SESSION
AUGUST 20, 2025 – SUMMER GRADES AVAILABLE ON TRANSCRIPT
Fall 2025
AUGUST 16 & 17, 2025 – FALL CONVOCATIONS
Convocation marks the beginning of a student’s academic career at Mines.
AUGUST 25, 2025 – START FALL 16-WK AND ONLINE-ONLY 8-WK CLASSES
Classes begin for the 16-week sessions and first ONLINE-only 8-week sessions.
SEPTEMBER 3, 2025 – LAST DAY TO ADD OR DROP CLASSES FOR 16-WK SESSION & FIRST 8-WK SESSIONS
Last day to add or drop courses with a 100% refund, change course sections, request courses for no credit, complete Registration Action Forms, add or drop waitlists, and authorize College Opportunity Fund (COF). Dropped courses do not appear on the transcript.
SEPTEMBER 1, 2025 – LABOR DAY HOLIDAY
Campus is closed.
SEPTEMBER 10, 2025 – CENSUS DAY
SEPTEMBER 11, 2025 – TERM BILL DUE DATE
Tuition due on this date.
SEPTEMBER 16 & 17, 2025 – CAREER DAYS
OCTOBER 2-4, 2025 – HOMECOMING
SEPTEMBER 30, 2025 – LAST DAY FOR COURSE WITHDRAWAL FOR FIRST ONLINE 8-WK SESSION
Last day to withdraw from courses in the first online only 8-week session. A student can withdraw from a class before or on the withdrawal date; no refund is given and the course does appear on the transcript with a grade of “W”.
OCTOBER 20, 2025 – CLASSES END FOR FIRST ONLINE-ONLY 8-WK SESSION
OCTOBER 20 & 21, 2025 – FALL BREAK
No-Class Days. Campus is open.
OCTOBER 22, 2025 – CLASSES START FOR ONLINE ONLY SECOND 8-WK SESSION
Classes begin for the second ONLINE-only 8-week sessions.
OCTOBER 24, 2025 – FINAL GRADES DUE FOR FIRST ONLINE-ONLY 8-WK CLASSES
OCTOBER 28, 2025 – LAST DAY TO ADD OR DROP CLASSES FOR SECOND 8-WK SESSION
OCTOBER 29, 2025 – MIDTERM GRADES DUE
OCTOBER 31-NOVEMBER 2, 2025 – FAMILY & FRIENDS WEEKEND
NOVEMBER 14, 2025 – LAST COURSE WITHDRAWAL FOR 16-WK SESSION
Last day to withdraw from courses in the 16-week session. A student can withdraw from a class before or on the withdrawal date; no refund is given and the course does appear on the transcript with a grade of “W”.
NOVEMBER 17-21, 2025 – REGISTRATION FOR SPRING
Registration times during the week of registration are assigned by a student’s class level.
NOVEMBER 25, 2025 – LAST COURSE WITHDRAWAL FOR FALL ONLINE-ONLY SECOND 8-WK SESSION
Last day to withdraw from courses in the second online only 8-week session. A student can withdraw from a class before or on the withdrawal date; no refund is given and the course does appear on the transcript with a grade of “W”.
NOVEMBER 26, 2025 – THANKSGIVING BREAK BEGINS
No-Class Day prior to Thanksgiving Holiday. Campus is closed.
NOVEMBER 27 & 28, 2025 – THANKSGIVING HOLIDAY
Campus closed.
DECEMBER 10, 2025 – CLASSES END FOR 16-WK SESSION
DECEMBER 8-10, 2025 – LAST WEEK OF CLASS
DECEMBER 11, 2025 – REVIEW DAY
No-Class Day. No academic activities.
DECEMBER 12-13 & 15-17, 2025 – FINAL EXAMS
DECEMBER 17, 2025 – CLASSES END FOR SECOND ONLINE-ONLY 8-WK SESSION
DECEMBER 19, 2025 – COMMENCEMENT
Separate undergraduate and graduate ceremonies.
DECEMBER 19, 2025 – SEMESTER ENDS
DECEMBER 22, 2025 – FINAL GRADES DUE FOR ALL 16-WK SESSION AND SECOND ONLINE-ONLY 8-WK SESSION
DECEMBER 22, 2025 – JANUARY 11, 2026 – WINTER BREAK
DECEMBER 25, 2025 – JANUARY 1, 2026 – CAMPUS CLOSED
JANUARY 8, 2026 – FINAL GRADES AVAILABLE ON TRANSCRIPT
No-Class Days and Holidays
MARTIN LUTHER KING DAY HOLIDAY – CAMPUS CLOSED
January 15, 2024
PRESIDENTS’ DAY BREAK – NO-CLASS DAY, CAMPUS OPEN
February 19-20, 2024
SPRING BREAK
March 16-24, 2024
E-DAYS – NO-CLASS DAYS ON FRIDAY
April 12-14, 2024
MEMORIAL DAY – CAMPUS CLOSED
May 27, 2024
JUNETEENTH – CAMPUS CLOSED
June 19, 2024
INDEPENDENCE DAY HOLIDAY – CAMPUS CLOSED
July 4, 2024
LABOR DAY – CAMPUS CLOSED
September 2, 2024
FALL BREAK – NO-CLASS DAY, CAMPUS OPEN
October 14-15, 2024
THANKSGIVING HOLIDAY – NO-CLASS DAY, CAMPUS CLOSED
November 27, 2024
THANKSGIVING HOLIDAY – CAMPUS CLOSED
November 28-29, 2024
WINTER BREAK – CAMPUS CLOSED
December 16, 2024 – January 5, 2025
Current Calendar
- Academic Calendar (2024-2025)
Future Calendar (not final & subject to change)
- Academic Calendar (2025-2026)
Archived Calendars
- Academic Calendar (2023-2024)
- Academic Calendar (2022-2023)
- Academic Calendar (2021-2022)
- Academic Calendar (2020-2021)
- Academic Calendar (2019-2020)
- Academic Calendar (Summer 2019)
- Academic Calendar (2018-2019)
- Academic Calendar (2017 and Prior)