Main Campus Calendars By Topic
Main Campus Calendars By Special Session
The calendars on this page apply to Main Campus special session classes.
For Colorado Law and all other classes, see "Other CU Calendars" above.
NOTE: If you withdrawal from all classes within a certain period, you will be accessed a withdrawal fee.
Summer 2023
Variable Sessions
- BCOR 2201-600 & 2304-600
- BCOR 2202-500, 2203-500 & 2302-500
- BCOR 2204-600 & 2301-600
- BCOR 2205-500, 2206-500 & 2303-500
- BUSM 2010-500 & 2010-501
- BUSM 2011-500 & 2011-501
- BUSM 2020-600 & 2020-601
- BUSM 2021-600 & 2021-601
- CSPB 1300, 2270, 2400, 2820, 2824, 3022, 3104, 3112, 3155, 3308, 3702, 3753, 4122, 4502 & 4622
- CSPB 4502-001
- CCOM 5102-002
- CCOM 5108-001
- GEOG 5663-400
- MBAC 6001-602
- MBAC 6031-100
- MBAC 6031-500
- MBAC 6031-600
- OREC 5003-001 & 5020-200
- OREC 5005-200 & 5013-200
Tuesday, July 11
- First class day.
- Last day to add this class.
Wednesday, July 12
- Last day to drop this class without tuition/fee charges and a W grade (you must remain enrolled in at least one other variable session class).
- Last day to edit your class options.
- Last day to withdraw from the session with a full refund.
Thursday, July 20
- Last day to drop this class and remain enrolled in at least one other variable session class. You'll be assessed full tuition, and a W grade will post to your transcript.
Tuesday, July 25
- Last day to withdraw from this session; you'll be assessed 100% of tuition and W grades will post to your transcript.
Wednesday, July 26
- Last class day.
Monday, June 5
- First class day.
- Last day to add this class.
Tuesday, June 6
- Last day to drop this class without tuition/fee charges and a W grade (you must remain enrolled in at least one other variable session class).
- Last day to edit your class options.
- Last day to withdraw from the session with a full refund.
Wednesday, June 14
- Last day to drop this class and remain enrolled in at least one other variable session class. You'll be assessed full tuition, and a W grade will post to your transcript.
Monday, June 19
- Last day to withdraw from this session; you'll be assessed 100% of tuition and W grades will post to your transcript.
Tuesday, June 20
- Last class day.
Thursday, July 27
- First class day.
- Last day to add this class.
Friday, July 28
- Last day to drop this class without tuition/fee charges and a W grade (you must remain enrolled in at least one other variable session class).
- Last day to edit your class options.
- Last day to withdraw from the session with a full refund.
Monday, Aug. 7
- Last day to drop this class and remain enrolled in at least one other variable session class. You'll be assessed full tuition, and a W grade will post to your transcript.
Thursday, Aug. 10
- Last day to withdraw from this session; you'll be assessed 100% of tuition and W grades will post to your transcript.
Friday, Aug. 11
- Last class day.
Wednesday, June 21
- First class day.
- Last day to add this class.
Thursday, June 22
- Last day to drop this class without tuition/fee charges and a W grade (you must remain enrolled in at least one other variable session class).
- Last day to edit your class options.
- Last day to withdraw from the session with a full refund.
Friday, June 30
- Last day to drop this class and remain enrolled in at least one other variable session class. You'll be assessed full tuition, and a W grade will post to your transcript.
Thursday, July 6
- Last day to withdraw from this session; you'll be assessed 100% of tuition and W grades will post to your transcript.
Friday, July 7
- Last class day.
Wednesday, June 21
- First class day.
- Last day to add this class.
Thursday, June 22
- Last day to drop this class without tuition/fee charges and a W grade (you must remain enrolled in at least one other variable session class).
- Last day to edit your class options.
- Last day to withdraw from the session with a full refund.
Friday, June 30
- Last day to drop this class and remain enrolled in at least one other variable session class. You'll be assessed full tuition, and a W grade will post to your transcript.
Thursday, July 6
- Last day to withdraw from this session; you'll be assessed 100% of tuition and W grades will post to your transcript.
Friday, July 7
- Last class day.
Monday, June 5
- First class day.
- Last day to add this class.
Tuesday, June 6
- Last day to drop this class without tuition/fee charges and a W grade (you must remain enrolled in at least one other variable session class).
- Last day to edit your class options.
- Last day to withdraw from the session with a full refund.
Wednesday, June 14
- Last day to drop this class and remain enrolled in at least one other variable session class. You'll be assessed full tuition, and a W grade will post to your transcript.
Monday, June 19
- Last day to withdraw from this session; you'll be assessed 100% of tuition and W grades will post to your transcript.
Tuesday, June 20
- Last class day.
Tuesday, July 11
- First class day.
- Last day to add this class.
Friday, July 12
- Last day to drop this class without tuition/fee charges and a W grade (you must remain enrolled in at least one other variable session class).
- Last day to edit your class options.
- Last day to withdraw from the session with a full refund.
Thursday, July 20
- Last day to drop this class and remain enrolled in at least one other variable session class. You'll be assessed full tuition, and a W grade will post to your transcript.
Tuesday, July 25
- Last day to withdraw from this session; you'll be assessed 100% of tuition and W grades will post to your transcript.
Friday, July 26
- Last class day.
Thursday, July 27
- First class day.
- Last day to add this class.
Friday, July 28
- Last day to drop this class without tuition/fee charges and a W grade (you must remain enrolled in at least one other variable session class).
- Last day to edit your class options.
- Last day to withdraw from the session with a full refund.
Monday, Aug. 7
- Last day to drop this class and remain enrolled in at least one other variable session class. You'll be assessed full tuition, and a W grade will post to your transcript.
Thursday, Aug. 10
- Last day to withdraw from this session; you'll be assessed 100% of tuition and W grades will post to your transcript.
Friday, Aug. 11
- Last class day.
Monday, May 22
- First class day.
Tuesday, May 30
- Last day to add this class.
Monday, June 5
- Last day to drop this class without tuition/fee charges and a W grade (you must remain enrolled in at least one other variable session class).
- Last day to edit your class options.
- Last day to withdraw from the session with a full refund.
Thursday, July 20
- Last day to drop this class and remain enrolled in at least one other variable session class. You'll be assessed full tuition, and a W grade will post to your transcript.
Thursday, Aug. 17
- Last day to withdraw from this session; you'll be assessed 100% of tuition and W grades will post to your transcript.
Friday, Aug. 18
- Last class day.
Monday, May 22
- First class day.
Tuesday, May 30
- Last day to add this class.
Monday, June 5
- Last day to drop this class without tuition/fee charges and a W grade (you must remain enrolled in at least one other variable session class).
- Last day to edit your class options.
- Last day to withdraw from the session with a full refund.
Thursday, July 20
- Last day to drop this class and remain enrolled in at least one other variable session class. You'll be assessed full tuition, and a W grade will post to your transcript.
Thursday, Aug. 17
- Last day to withdraw from this session; you'll be assessed 100% of tuition and W grades will post to your transcript.
Friday, Aug. 18
- Last class day.
Monday, May 15
- First class day.
Wednesday, May 17
- Last day to add this class.
Monday, May 22
- Last day to drop this class without tuition/fee charges and a W grade (you must remain enrolled in at least one other variable session class).
- Last day to edit your class options.
- Last day to withdraw from the session with a full refund.
Thursday, June 15
- Last day to drop this class and remain enrolled in at least one other variable session class. You'll be assessed full tuition, and a W grade will post to your transcript.
Thursday, June 29
- Last day to withdraw from this session; you'll be assessed 100% of tuition and W grades will post to your transcript.
Friday, June 30
- Last class day.
Monday, July 3
- First class day.
Thursday, July 6
- Last day to add this class.
Tuesday, July 11
- Last day to drop this class without tuition/fee charges and a W grade (you must remain enrolled in at least one other variable session class).
- Last day to edit your class options.
- Last day to withdraw from the session with a full refund.
Thursday, Aug. 3
- Last day to drop this class and remain enrolled in at least one other variable session class. You'll be assessed full tuition, and a W grade will post to your transcript.
Thursday, Aug. 17
- Last day to withdraw from this session; you'll be assessed 100% of tuition and W grades will post to your transcript.
Friday, Aug. 18
- Last class day.
Tuesday, May 16
- First class day.
Wednesday, May 24
- Last day to add this class.
Thursday, June 1
- Last day to drop this class without tuition/fee charges and a W grade (you must remain enrolled in at least one other variable session class).
- Last day to edit your class options.
- Last day to withdraw from the session with a full refund.
Monday, July 24
- Last day to drop this class and remain enrolled in at least one other variable session class. You'll be assessed full tuition, and a W grade will post to your transcript.
Wednesday, Aug. 23
- Last day to withdraw from this session; you'll be assessed 100% of tuition and W grades will post to your transcript.
Thursday, Aug. 24
- Last class day.
Monday, Aug. 14
- First class day.
- Last day to add this class.
- Last day to drop this class without tuition/fee charges and a W grade (you must remain enrolled in at least one other variable session class).
- Last day to edit your class options.
- Last day to withdraw from the session with a full refund.
Wednesday, Aug. 16
- Last day to drop this class and remain enrolled in at least one other variable session class. You'll be assessed full tuition, and a W grade will post to your transcript.
Thursday, Aug. 17
- Last day to withdraw from this session; you'll be assessed 100% of tuition and W grades will post to your transcript.
Friday, Aug. 18
- Last class day.
Monday, May 25
- First class day.
Friday, June 2
- Last day to add this class.
Thursday, June 8
- Last day to drop this class without tuition/fee charges and a W grade (you must remain enrolled in at least one other variable session class).
- Last day to edit your class options.
- Last day to withdraw from the session with a full refund.
Friday, July 21
- Last day to drop this class and remain enrolled in at least one other variable session class. You'll be assessed full tuition, and a W grade will post to your transcript.
Thursday, Aug. 17
- Last day to withdraw from this session; you'll be assessed 100% of tuition and W grades will post to your transcript.
Friday, Aug. 18
- Last class day.
Monday, May 15
- First class day.
Thursday, May 18
- Last day to add this class.
Saturday, May 20
- Last day to drop this class without tuition/fee charges and a W grade (you must remain enrolled in at least one other variable session class).
- Last day to edit your class options.
- Last day to withdraw from the session with a full refund.
Thursday, June 15
- Last day to drop this class and remain enrolled in at least one other variable session class. You'll be assessed full tuition, and a W grade will post to your transcript.
Thursday, June 29
- Last day to withdraw from this session; you'll be assessed 100% of tuition and W grades will post to your transcript.
Friday, June 30
- Last class day.
Monday, Aug. 7
- First class day.
- Last day to add this class.
- Last day to drop this class without tuition/fee charges and a W grade (you must remain enrolled in at least one other variable session class).
- Last day to edit your class options.
- Last day to withdraw from the session with a full refund.
Wednesday, Aug. 9
- Last day to drop this class and remain enrolled in at least one other variable session class. You'll be assessed full tuition, and a W grade will post to your transcript.
Thursday, Aug. 10
- Last day to withdraw from this session; you'll be assessed 100% of tuition and W grades will post to your transcript.
Friday, Aug. 11
- Last class day.
Monday, May 15
- First class day.
Wednesday, May 17
- Last day to add this class.
Monday, May 22
- Last day to drop this class without tuition/fee charges and a W grade (you must remain enrolled in at least one other variable session class).
- Last day to edit your class options.
- Last day to withdraw from the session with a full refund.
Thursday, June 15
- Last day to drop this class and remain enrolled in at least one other variable session class. You'll be assessed full tuition, and a W grade will post to your transcript.
Thursday, June 29
- Last day to withdraw from this session; you'll be assessed 100% of tuition and W grades will post to your transcript.
Friday, June 30
- Last class day.
Monday, July 3
- First class day.
Thursday, July 6
- Last day to add this class.
Tuesday, July 11
- Last day to drop this class without tuition/fee charges and a W grade (you must remain enrolled in at least one other variable session class).
- Last day to edit your class options.
- Last day to withdraw from the session with a full refund.
Thursday, Aug. 3
- Last day to drop this class and remain enrolled in at least one other variable session class. You'll be assessed full tuition, and a W grade will post to your transcript.
Thursday, Aug. 17
- Last day to withdraw from this session; you'll be assessed 100% of tuition and W grades will post to your transcript.
Friday, Aug. 18
- Last class day.
Fall 2023
8-Week Sessions
5-Week Sessions
Variable Sessions
Monday, Aug. 28
- First class day.
Wednesday, Sept. 6
- Last day to add this class.
Tuesday, Sept. 12
- Last day to drop this class without tuition/fee charges and a W grade (you must remain enrolled in at least one other variable session class).
- Last day to edit your class options.
- Last day to withdraw from the session with a full refund.
Tuesday, Oct. 31
- Last day to drop this class and remain enrolled in at least one other variable session class. You'll be assessed full tuition, and a W grade will post to your transcript.
Thursday, Dec. 7
- Last day to withdraw from this session; you'll be assessed 100% of tuition and W grades will post to your transcript.
Friday, Dec. 8
- Last class day.
Monday, August 28
- First class day.
Tuesday, Sept. 5
- Last day to add this class.
Tuesday, Sept. 12
- Last day to drop this class without tuition/fee charges and a W grade (you must remain enrolled in at least one other variable session class).
- Last day to edit your class options.
- Last day to withdraw from the session with a full refund.
Tuesday, Oct. 31
- Last day to drop this class and remain enrolled in at least one other variable session class. You'll be assessed full tuition, and a W grade will post to your transcript.
Friday, Dec. 8
- Last day to withdraw from this session; you'll be assessed 100% of tuition and W grades will post to your transcript.
- Last class day.
Monday, August 28
- First class day.
Tuesday, Sept. 5
- Last day to add this class.
Tuesday, Sept. 12
- Last day to drop this class without tuition/fee charges and a W grade (you must remain enrolled in at least one other variable session class).
- Last day to edit your class options.
- Last day to withdraw from the session with a full refund.
Tuesday, Oct. 31
- Last day to drop this class and remain enrolled in at least one other variable session class. You'll be assessed full tuition, and a W grade will post to your transcript.
Friday, Dec. 8
- Last day to withdraw from this session; you'll be assessed 100% of tuition and W grades will post to your transcript.
- Last class day.
Monday, Aug. 28
- First class day.
Thursday, Aug. 31
- Last day to add this class.
Thursday, Sept. 7
- Last day to drop this class without tuition/fee charges and a W grade (you must remain enrolled in at least one other variable session class).
- Last day to edit your class options.
- Last day to withdraw from the session with a full refund.
Tuesday, Oct. 10
- Last day to drop this class and remain enrolled in at least one other variable session class. You'll be assessed full tuition, and a W grade will post to your transcript.
Tuesday, Oct. 31
- Last day to withdraw from this session; you'll be assessed 100% of tuition and W grades will post to your transcript.
Wednesday, Nov. 1
- Last class day.
Monday, August 28
- First class day.
Tuesday, Sept. 5
- Last day to add this class.
Tuesday, Sept. 12
- Last day to drop this class without tuition/fee charges and a W grade (you must remain enrolled in at least one other variable session class).
- Last day to edit your class options.
- Last day to withdraw from the session with a full refund.
Tuesday, Oct. 31
- Last day to drop this class and remain enrolled in at least one other variable session class. You'll be assessed full tuition, and a W grade will post to your transcript.
Friday, Dec. 8
- Last day to withdraw from this session; you'll be assessed 100% of tuition and W grades will post to your transcript.
- Last class day.
Thursday, Sept. 14
- First class day.
Thursday, Sept. 21
- Last day to add this class.
Wednesday, Sept. 27
- Last day to drop this class without tuition/fee charges and a W grade (you must remain enrolled in at least one other variable session class).
- Last day to edit your class options.
- Last day to withdraw from the session with a full refund.
Thursday, Nov. 9
- Last day to drop this class and remain enrolled in at least one other variable session class. You'll be assessed full tuition, and a W grade will post to your transcript.
Wednesday, Dec. 13
- Last day to withdraw from this session; you'll be assessed 100% of tuition and W grades will post to your transcript.
Thursday, Dec. 14
- Last class day.
Thursday, Aug. 31
- First class day.
Friday, Sept. 8, 2023
- Last day to add this class.
Friday, Sept. 15, 2023
- Last day to drop this class without tuition/fee charges and a W grade (you must remain enrolled in at least one other variable session class).
- Last day to edit your class options.
- Last day to withdraw from the session with a full refund.
Wednesday, Nov. 1
- Last day to drop this class and remain enrolled in at least one other variable session class. You'll be assessed full tuition, and a W grade will post to your transcript.
Wednesday, Dec. 6
- Last day to withdraw from this session; you'll be assessed 100% of tuition and W grades will post to your transcript.
Thursday, Dec. 7
- Last class day.
Tuesday, Aug. 29
- First class day.
Wednesday, Sept. 6, 2023
- Last day to add this class.
Wednesday, Sept. 13, 2023
- Last day to drop this class without tuition/fee charges and a W grade (you must remain enrolled in at least one other variable session class).
- Last day to edit your class options.
- Last day to withdraw from the session with a full refund.
Monday, Oct. 30
- Last day to drop this class and remain enrolled in at least one other variable session class. You'll be assessed full tuition, and a W grade will post to your transcript.
Monday, Dec. 4
- Last day to withdraw from this session; you'll be assessed 100% of tuition and W grades will post to your transcript.
Tuesday, Dec. 5
- Last class day.
Monday, Aug. 28
- First class day.
Wednesday, Sept. 6, 2023
- Last day to add this class.
Wednesday, Sept. 13, 2023
- Last day to drop this class without tuition/fee charges and a W grade (you must remain enrolled in at least one other variable session class).
- Last day to edit your class options.
- Last day to withdraw from the session with a full refund.
Friday, Nov. 3
- Last day to drop this class and remain enrolled in at least one other variable session class. You'll be assessed full tuition, and a W grade will post to your transcript.
Wednesday, Dec. 13
- Last day to withdraw from this session; you'll be assessed 100% of tuition and W grades will post to your transcript.
Thursday, Dec. 14
- Last class day.
Spring 2023
8-Week Sessions
5-Week Sessions
Variable Sessions
Wednesday, Jan. 18
- First class day.
Thursday, Jan. 19
- Last day to add this class.
Friday, Jan. 20
- Last day to drop this class without tuition/fee charges and a W grade (you must remain enrolled in at least one other variable session class).
- Last day to edit your class options.
- Last day to withdraw from the session with a full refund.
Thursday, Feb. 2
- Last day to drop this class and remain enrolled in at least one other variable session class. You'll be assessed full tuition, and a W grade will post to your transcript.
Thursday, Feb. 9
- Last day to withdraw from this session; you'll be assessed 100% of tuition and W grades will post to your transcript.
Friday, Feb. 10
- Last class day.