Calendar

There are six 8-week sessions per year. Enrollment opens 2 weeks before the first day of class and ends 2 weeks before all coursework is due. All for-credit coursework is due byÌýthe last day of the 8-week session.

2025Ìý³§±ð²õ²õ¾±´Ç²Ô²õ

Enrollment Open: Jan 2 – Feb 21Ìý |Ìý Course Session: Jan 13Ìý– Mar 7Ìý

  • Jan 2Ìý, 9:00 a.m. MT | Enrollment Opens
  • Jan 13, 9:00 a.m. MT | For-credit Course Access Open
  • Jan 13,Ìý9:00 a.m. MT | ProctorU final exam scheduling begins – Do this as soon as possible! Must schedule exams 72+ hours in advance. The longer you wait, the fewer available spots.
  • Jan 26,​Ìý11:59 p.m. MT | Deadline to petition for a refund for any classes enrolled in before classes started – Must drop class & submit petition within 14 days of registration and before accessing final assessment (See details: MS-DS Handbook)
  • Feb 21, 5:00 p.m. MT | Enrollment Closes
  • Mar 04, 4:50 p.m. MT | Deadline to Schedule ProctorU Exams
  • Mar 04, 4:50 p.m. MT | Deadline to Submit Peer-graded Assignments
  • Mar 07, 4:50 p.m. MT | Deadline to complete ProctorU Exams
  • Mar 07, 4:50 p.m. MT | Deadline to Review Your Peers
  • Mar 07, 11:59 p.m. MT | Last day toÌýdrop or withdraw from a class, if you still qualify.
  • Mar 07, 11:59 p.m. MT | For-credit Course Access CloseÌý–ÌýDeadline to access & submit all remaining graded items
  • Mar 17, 5:00 p.m. MT | Final grades post, available in Buff Portal through theÌý.
  • Mar 27, 5:00 p.m. MT |ÌýDegree and certificates conferred.
  • Apr 6, 11:59 p.m. MT |ÌýLast day to update your diploma name and address in Buff Portal before diplomas and certificates are ordered.

Enrollment Open: Feb 24Ìý– Apr 18Ìý |Ìý Course Session: Mar 10Ìý– May 2Ìý

  • Feb 24, 9:00 a.m. MT | Enrollment Opens
  • Mar 10, 9:00 a.m. MT | For-credit Course Access Open
  • Mar 10,Ìý9:00 a.m. MT | ProctorU final exam scheduling begins – Do this as soon as possible! Must schedule exams 72+ hours in advance. The longer you wait, the fewer available spots.
  • Mar 23,Ìý11:59 p.m. MT | Deadline to petition for a refund for any classes enrolled in before classes started – Must drop class & submit petition within 14 days of registration and before accessing final assessment (See details: MS-DS Handbook)
  • Apr 18, 5:00 p.m. MT | Enrollment Closes
  • Apr 29, 4:50 p.m. MT | Deadline to Schedule ProctorU Exams
  • Apr 29, 4:50 p.m. MT | Deadline to Submit Peer-graded Assignments
  • May 2, 4:50 p.m. MT | Deadline to complete ProctorU Exams
  • May 2, 4:50 p.m. MT | Deadline to Review Your Peers
  • May 2, 11:59 p.m. MT | Last day toÌýdrop or withdraw from a class, if you still qualify.
  • May 2, 11:59 p.m. MT | For-credit Course Access CloseÌý–ÌýDeadline to access & submit all remaining graded items
  • May 12, 11:59 p.m. MT |ÌýFinal grades post., available in Buff Portal through theÌý.
  • May 23, 11:59 p.m. | Degree and certificates conferred.
  • May 30, 11:59 p.m. |ÌýLast day to update your diploma name and address in Buff Portal before diplomas and certificates are ordered.

Enrollment Open: Apr 21Ìý– Jun 13Ìý |Ìý Course Session: May 5 – Jun 27

  • Apr 21, 9:00 a.m. MT | Enrollment Opens
  • May 5, 9:00 a.m. MT | For-credit Course Access Open
  • May 5,Ìý9:00 a.m. MT | ProctorU final exam scheduling begins – Do this as soon as possible! Must schedule exams 72+ hours in advance. The longer you wait, the fewer available spots.
  • May 18,Ìý11:59 p.m. MT | Deadline to petition for a refund for any classes enrolled in before classes started – Must drop class & submit petition within 14 days of registration and before accessing final assessment (See details: MS-DS Handbook)
  • Jun 13, 5:00 p.m. MT | Enrollment Closes
  • Jun 24, 4:50 p.m. MT | Deadline to Schedule ProctorU Exams
  • Jun 24, 4:50 p.m. MT | Deadline to Submit Peer-graded Assignments
  • Jun 27, 4:50 p.m. MT | Deadline to complete ProctorU Exams
  • Jun 27, 4:50 p.m. MT | Deadline to Review Your Peers
  • Jun 27, 11:59 p.m. MT |ÌýLast day toÌýdrop or withdraw from a class, if you still qualify.
  • Jun 27, 11:59 p.m. MT | For-credit Course Access CloseÌý–ÌýDeadline to access & submit all remaining graded items
  • Jul 7, 5:00Ìýp.m. MT |ÌýFinal grades post, available in Buff Portal through theÌý.
  • Jul 18, 5:00Ìýp.m. MT |ÌýDegree and certificates conferred.
  • Jul 25, 11:59 p.m. MT |ÌýLast day to update your diploma name and address in Buff Portal before diplomas and certificates are ordered.

Enrollment Open: Jun 16Ìý– July 18Ìý |Ìý Course Session: June 30Ìý– Aug 1

ÌýÌýImportant: Summer 2025 Session 2 classes will be 5 weeks instead of 8 weeks. Ãå±±½ûµØ is excited to introduce a new, streamlined for-credit enrollment experience starting this fall. To prepare for this new experience, the Summer 2025 Session 2 classes will end after five weeks instead of the usual eight. Ensure you have enough time to complete all course content before the for-credit session ends on Aug. 1. Ãå±±½ûµØ will not issue extensions for incomplete work.ÌýÌý
Ìý
If you are considering upgrading to the for-credit experience in Summer 2, we recommend waiting and starting your for-credit experience in the Fall 1 session or later. Note that Fall 1 for-credit enrollment opens on Aug. 20. In the meantime, you can make progress toward earning Ãå±±½ûµØ credit by enrolling in the non-credit experience.ÌýÌý

  • Jun 16, 9:00 a.m. MT | Enrollment Opens
  • June 30, 9:00 a.m. MT | For-credit Course Access Open
  • June 30,Ìý9:00 a.m. MT | ProctorU final exam scheduling begins – Do this as soon as possible! Must schedule exams 72+ hours in advance. The longer you wait, the fewer available spots.
  • Jul 13,Ìý11:59 p.m. MT | Deadline to petition for a refund for any classes enrolled in before classes started – Must drop class & submit petition within 14 days of registration and before accessing final assessment (See details: MS-DS Handbook)
  • July 18, 5:00 p.m. MT | Enrollment Closes
    • Summer 2025 Session 2 classes end only 1 week after for-credit enrollment closes. If you plan to upgrade from non-credit to for-credit in the Summer 2 session, make sure you have enough time to complete all assignments by the posted for-credit deadlines, including submitting peer-reviewed assignments and scheduling any proctored exams.
  • Jul 29, 4:50 p.m. MT | Deadline to Schedule ProctorU Exams
  • July 29, 4:50 p.m. MT | Deadline to Submit Peer-graded Assignments
  • Aug 1, 4:50 p.m. MT | Deadline to complete ProctorU Exams
  • Aug 1, 4:50 p.m. MT | Deadline to Review Your Peers
  • Aug 1, 11:59 p.m. MT | Last day toÌýdrop or withdraw from a class, if you still qualify.
  • Aug 1, 11:59 p.m. MT | For-credit Course Access CloseÌý–ÌýDeadline to access & submit all remaining graded items
  • Aug 6, 5:00 p.m. MT |ÌýFinal grades post, available in Buff Portal through theÌý.
  • Aug 8, 5:00 p.m. MT |ÌýDegree and certificates conferred.
  • Aug 15, 11:59 p.m. MT |ÌýLast day to update your diploma name and address in Buff Portal before diplomas and certificates are ordered.

Enrollment Open: Aug 20 – Oct 03 |Ìý Course Session: Aug 25Ìý– Oct 17

  • Aug 20, 9:00 a.m. MT | Enrollment Opens
  • Aug 25, 9:00 a.m. MT | For-credit Course Access Open
  • Aug 25,Ìý9:00 a.m. MT | ProctorU final exam scheduling begins – Do this as soon as possible! Must schedule exams 72+ hours in advance. The longer you wait, the fewer available spots.
  • Sep 7,​Ìý11:59 p.m. MT | Deadline to petition for a refund for any classes enrolled in before classes started – Must drop class & submit petition within 14 days of registration and before accessing final assessment (See details: MS-DS Handbook)
  • Oct 3, 5:00 p.m. MT | Enrollment Closes
  • Oct 14, 4:50 p.m. MT | Deadline to Schedule ProctorU Exams
  • Oct 14, 4:50 p.m. MT | Deadline to Submit Peer-graded Assignments
  • Oct 17, 4:50 p.m. MT | Deadline to complete ProctorU Exams
  • Oct 17, 4:50 p.m. MT | Deadline to Review Your Peers
  • Oct 17, 11:59 p.m. MT | Last day toÌýdrop or withdraw from a class, if you still qualify.
  • Oct 17, 11:59 p.m. MT | For-credit Course Access CloseÌý–ÌýDeadline to access & submit all remaining graded items
  • Oct 27, 5:00 p.m. MT | Final grades post, available in Buff Portal through theÌý.
  • Nov 7, 5:00 p.m. MT |ÌýDegree and certificates conferred.
  • Nov 14, 11:59 p.m. MT |ÌýLast day to update your diploma name and address in Buff Portal before diplomas and certificates are ordered.

Enrollment Open: Oct 6 – Nov 28 |Ìý Course Session: Oct 20Ìý– Dec 12

  • Oct 6, 9:00 a.m. MT | Enrollment Opens
  • Oct 20, 9:00 a.m. MT | For-credit Course Access Open
  • Oct 20,Ìý9:00 a.m. MT | ProctorU final exam scheduling begins – Do this as soon as possible! Must schedule exams 72+ hours in advance. The longer you wait, the fewer available spots.
  • Nov 2,​Ìý11:59 p.m. MT | Deadline to petition for a refund for any classes enrolled in before classes started – Must drop class & submit petition within 14 days of registration and before accessing final assessment (See details: MS-DS Handbook)
  • Nov 28, 5:00 p.m. MT | Enrollment Closes
  • Dec 9, 4:50 p.m. MT | Deadline to Schedule ProctorU Exams
  • Dec 9, 4:50 p.m. MT | Deadline to Submit Peer-graded Assignments
  • Dec 12, 4:50 p.m. MT | Deadline to complete ProctorU Exams
  • Dec 12, 4:50 p.m. MT | Deadline to Review Your Peers
  • Dec 12, 11:59 p.m. MT | Last day toÌýdrop or withdraw from a class, if you still qualify.
  • Dec 12, 11:59 p.m. MT | For-credit Course Access CloseÌý–ÌýDeadline to access & submit all remaining graded items
  • Dec 22, 5:00 p.m. MT | Final grades post, available in Buff Portal through theÌý.
  • Dec 25 - Jan 1,ÌýWinter Break, Campus Closed
  • Jan 9, 5:00 p.m. MT |ÌýDegree and certificates conferred.
  • Jan 16, 11:59 p.m. MT |ÌýLast day to update your diploma name and address in Buff Portal before diplomas and certificates are ordered.

2026ÌýSessions

Enrollment Open: Jan 1 – Feb 20 |Ìý Course Session: Jan 12Ìý– Mar 6

  • Jan 1, 9:00 a.m. MT | Enrollment Opens
  • Jan 12, 9:00 a.m. MT | For-credit Course Access Open
  • Jan 12,Ìý9:00 a.m. MT | ProctorU final exam scheduling begins – Do this as soon as possible! Must schedule exams 72+ hours in advance. The longer you wait, the fewer available spots.
  • Jan 25,​Ìý11:59 p.m. MT | Deadline to petition for a refund for any classes enrolled in before classes started – Must drop class & submit petition within 14 days of registration and before accessing final assessment (See details: MS-DS Handbook)
  • Feb 20, 5:00 p.m. MT | Enrollment Closes
  • Mar 3, 4:50 p.m. MT | Deadline to Schedule ProctorU Exams
  • Mar 3, 4:50 p.m. MT | Deadline to Submit Peer-graded Assignments
  • Mar 6, 4:50 p.m. MT | Deadline to complete ProctorU Exams
  • Mar 6, 4:50 p.m. MT | Deadline to Review Your Peers
  • Mar 6, 11:59 p.m. MT | Last day toÌýdrop or withdraw from a class, if you still qualify.
  • Mar 6, 11:59 p.m. MT | For-credit Course Access CloseÌý–ÌýDeadline to access & submit all remaining graded items
  • Mar 16, 5:00 p.m. MT | Final grades post, available in Buff Portal through theÌý.
  • Mar 26, 5:00 p.m. MT |ÌýDegree and certificates conferred.
  • Apr 5, 11:59 p.m. MT |ÌýLast day to update your diploma name and address in Buff Portal before diplomas and certificates are ordered.

Enrollment Open: Feb 23 – April 17 |Ìý Course Session: Mar 9Ìý– May 1

  • Feb 23, 9:00 a.m. MT | Enrollment Opens
  • Mar 9, 9:00 a.m. MT | For-credit Course Access Open
  • Mar 9,Ìý9:00 a.m. MT | ProctorU final exam scheduling begins – Do this as soon as possible! Must schedule exams 72+ hours in advance. The longer you wait, the fewer available spots.
  • Mar 22,​Ìý11:59 p.m. MT | Deadline to petition for a refund for any classes enrolled in before classes started – Must drop class & submit petition within 14 days of registration and before accessing final assessment (See details: MS-DS Handbook)
  • Apr 17, 5:00 p.m. MT | Enrollment Closes
  • Apr 28, 4:50 p.m. MT | Deadline to Schedule ProctorU Exams
  • Apr 28, 4:50 p.m. MT | Deadline to Submit Peer-graded Assignments
  • May 1, 4:50 p.m. MT | Deadline to complete ProctorU Exams
  • May 1, 4:50 p.m. MT | Deadline to Review Your Peers
  • May 1, 11:59 p.m. MT | Last day toÌýdrop or withdraw from a class, if you still qualify.
  • May 1, 11:59 p.m. MT | For-credit Course Access CloseÌý–ÌýDeadline to access & submit all remaining graded items
  • May 11, 5:00 p.m. MT | Final grades post, available in Buff Portal through theÌý.
  • May 22, 5:00 p.m. MT |ÌýDegree and certificates conferred.
  • May 29, 11:59 p.m. MT |ÌýLast day to update your diploma name and address in Buff Portal before diplomas and certificates are ordered.

Previous Sessions

Enrollment Open: Jan 2– Feb 23Ìý |Ìý Course Session: Jan 15Ìý– Mar 8

  • Jan 2Ìý, 9:00 a.m. MT | Enrollment Opens
  • Jan 15, 9:00 a.m. MT | Classes Start
  • Jan 15,Ìý9:00 a.m. MT | ProctorU final exam scheduling begins – Do this as soon as possible! Must schedule exams 72+ hours in advance. The longer you wait, the fewer available spots.
  • Jan 28,​Ìý11:59 p.m. MT | Deadline to petition for a refund for any classes enrolled in before classes started – Must drop class & submit petition within 14 days of registration and before accessing final assessment (See details: MS-DS Handbook)
  • Feb 23, 5:00 p.m. MT | Enrollment Closes
  • Mar 05, 4:50 p.m. MT | Deadline to Schedule ProctorU Exams
  • Mar 05, 4:50 p.m. MT | Deadline to Submit Peer-graded Assignments
  • Mar 08, 4:50 p.m. MT | Deadline to complete ProctorU Exams
  • Mar 08, 4:50 p.m. MT | Deadline to Review Your Peers
  • Mar 08, 11:59 p.m. MT | Last day toÌýdrop or withdraw from a class, if you still qualify.
  • Mar 08, 11:59 p.m. MT | Classes EndÌý–ÌýDeadline to access & submit all remaining graded items
  • Mar 18, 5:00 p.m. MT | Final grades post at 5 p.m., available in Buff Portal through theÌý.
  • Mar 28, 5:00 p.m. MT |ÌýDegree and certificates conferred by 5 p.m.
  • Apr 7, 11:59 p.m. MT |ÌýLast day to update your diploma name and address in Buff Portal before diplomas and certificates are ordered.

Enrollment Open: Feb 26Ìý– Apr 19Ìý |Ìý Course Session: Mar 11Ìý– May 3

  • Feb 26, 9:00 a.m. MT | Enrollment Opens
  • Mar 11, 9:00 a.m. MT | Classes Start
  • Mar 11,Ìý9:00 a.m. MT | ProctorU final exam scheduling begins – Do this as soon as possible! Must schedule exams 72+ hours in advance. The longer you wait, the fewer available spots.
  • Mar 24,Ìý11:59 p.m. MT | Deadline to petition for a refund for any classes enrolled in before classes started – Must drop class & submit petition within 14 days of registration and before accessing final assessment (See details: MS-DS Handbook)
  • Apr 19, 5:00 p.m. MT | Enrollment Closes
  • Apr 30, 4:50 p.m. MT | Deadline to Schedule ProctorU Exams
  • Apr 30, 4:50 p.m. MT | Deadline to Submit Peer-graded Assignments
  • May 3, 4:50 p.m. MT | Deadline to complete ProctorU Exams
  • May 3, 4:50 p.m. MT | Deadline to Review Your Peers
  • May 3, 11:59 p.m. MT | Last day toÌýdrop or withdraw from a class, if you still qualify.
  • May 3, 11:59 p.m. MT | Classes EndÌý–ÌýDeadline to access & submit all remaining graded items
  • May 13, 11:59 p.m. MT |ÌýFinal grades post at 5 p.m., available in Buff Portal through theÌý.
  • May 24, 11:59 p.m. | Degree and certificates conferred by 5 p.m.
  • May 31, 11:59 p.m. |ÌýLast day to update your diploma name and address in Buff Portal before diplomas and certificates are ordered.

Enrollment Open: Apr 22Ìý– Jun 14Ìý |Ìý Course Session: May 6Ìý– Jun 28

  • Apr 22, 9:00 a.m. MT | Enrollment Opens
  • May 6, 9:00 a.m. MT | Classes Start
  • May 6,Ìý9:00 a.m. MT | ProctorU final exam scheduling begins – Do this as soon as possible! Must schedule exams 72+ hours in advance. The longer you wait, the fewer available spots.
  • May 19,Ìý11:59 p.m. MT | Deadline to petition for a refund for any classes enrolled in before classes started – Must drop class & submit petition within 14 days of registration and before accessing final assessment (See details: MS-DS Handbook)
  • Jun 14, 5:00 p.m. MT | Enrollment Closes
  • Jun 25, 4:50 p.m. MT | Deadline to Schedule ProctorU Exams
  • Jun 25, 4:50 p.m. MT | Deadline to Submit Peer-graded Assignments
  • Jun 28, 4:50 p.m. MT | Deadline to complete ProctorU Exams
  • Jun 28, 4:50 p.m. MT | Deadline to Review Your Peers
  • Jun 28, 11:59 p.m. MT |ÌýLast day toÌýdrop or withdraw from a class, if you still qualify.
  • Jun 28, 11:59 p.m. MT | Classes EndÌý–ÌýDeadline to access & submit all remaining graded items
  • Jul 8, 5:00Ìýp.m. MT |ÌýFinal grades post at 5 p.m., available in Buff Portal through theÌý.
  • Jul 19, 5:00Ìýp.m. MT |ÌýDegree and certificates conferred by 5 p.m.
  • Jul 26, 11:59 p.m. MT |ÌýLast day to update your diploma name and address in Buff Portal before diplomas and certificates are ordered.

Enrollment Open: Jun 17Ìý– Aug 9Ìý |Ìý Course Session: July 1Ìý– Aug 23

  • Jun 17, 9:00 a.m. MT | Enrollment Opens
  • Jul 1, 9:00 a.m. MT | Classes Start
  • Jul 1,Ìý9:00 a.m. MT | ProctorU final exam scheduling begins – Do this as soon as possible! Must schedule exams 72+ hours in advance. The longer you wait, the fewer available spots.
  • Jul 14,Ìý11:59 p.m. MT | Deadline to petition for a refund for any classes enrolled in before classes started – Must drop class & submit petition within 14 days of registration and before accessing final assessment (See details: MS-DS Handbook)
  • Aug 09, 5:00 p.m. MT | Enrollment Closes
  • Aug 20, 4:50 p.m. MT | Deadline to Schedule ProctorU Exams
  • Aug 20, 4:50 p.m. MT | Deadline to Submit Peer-graded Assignments
  • Aug 23, 4:50 p.m. MT | Deadline to complete ProctorU Exams
  • Aug 23, 4:50 p.m. MT | Deadline to Review Your Peers
  • Aug 23, 11:59 p.m. MT | Last day toÌýdrop or withdraw from a class, if you still qualify.
  • Aug 23, 11:59 p.m. MT | Classes EndÌý–ÌýDeadline to access & submit all remaining graded items
  • Sep 3, 5:00 p.m. MT |ÌýFinal grades post at 5 p.m., available in Buff Portal through theÌý.
  • Sep 13, 5:00 p.m. MT |ÌýDegree and certificates conferred by 5 p.m.
  • Sep 20, 11:59 p.m. MT |ÌýLast day to update your diploma name and address in Buff Portal before diplomas and certificates are ordered.

Enrollment Open: Aug 12Ìý– Oct 4Ìý |Ìý Course Session: Aug 26Ìý– Oct 18

  • Aug 12, 9:00 a.m. MT | Enrollment Opens
  • Aug 26, 9:00 a.m. MT | Classes Start
  • Aug 26,Ìý9:00 a.m. MT | ProctorU final exam scheduling begins – Do this as soon as possible! Must schedule exams 72+ hours in advance. The longer you wait, the fewer available spots.
  • Sep 8,Ìý11:59 p.m. MT | Deadline to petition for a refund for any classes enrolled in before classes started – Must drop class & submit petition within 14 days of registration and before accessing final assessment (See details: MS-DS Handbook)
  • Oct 4,Ìý5:00 p.m. MT | Enrollment Closes
  • Oct 15, 4:50 p.m. MT | Deadline to Schedule ProctorU Exams
  • Oct 15, 4:50 p.m. MT | Deadline to Submit Peer-graded Assignments
  • Oct 18, 4:50 p.m. MT | Deadline to complete ProctorU Exams
  • Oct 18, 4:50 p.m. MT | Deadline to Review Your Peers
  • Oct 18, 11:59 p.m. MT |ÌýLast day toÌýdrop or withdraw from a class, if you still qualify.
  • Oct 18, 11:59 p.m. MT | Classes EndÌý–ÌýDeadline to access & submit all remaining graded items
  • Oct 28, 5:00 p.m. MT |ÌýFinal grades post at 5 p.m., available in Buff Portal through theÌý.
  • Nov 8, 5:00 p.m. MTÌý|ÌýDegree and certificates conferred by 5 p.m.
  • Nov 15, 11:59 p.m. MT |ÌýLast day to update your diploma name and address in Buff Portal before diplomas and certificates are ordered.

Enrollment Open: Oct 7 – Nov 29Ìý |Ìý Course Session: Oct 21Ìý– Dec 13

  • Oct 7, 9:00 a.m. MT | Enrollment Opens
  • Oct 21, 9:00 a.m. MT | Classes Start
  • Oct 21,Ìý9:00 a.m. MT | ProctorU final exam scheduling begins – Do this as soon as possible! Must schedule exams 72+ hours in advance. The longer you wait, the fewer available spots.
  • Nov 3,Ìý11:59 p.m. MT | Deadline to petition for a refund for any classes enrolled in before classes started – Must drop class & submit petition within 14 days of registration and before accessing final assessment (See details: MS-DS Handbook)
  • Nov 29, 5:00 p.m. MT | Enrollment Closes
  • Dec 10, 4:50 p.m. MT | Deadline to Schedule ProctorU Exams
  • Dec 10, 4:50 p.m. MT | Deadline to Submit Peer-graded Assignments
  • Dec 13, 4:50 p.m. MT | Deadline to complete ProctorU Exams
  • Dec 13, 4:50 p.m. MT | Deadline to Review Your Peers
  • Dec 13, 11:59 p.m. MT |ÌýLast day toÌýdrop or withdraw from a class, if you still qualify.
  • Dec 13, 11:59 p.m. MT | Classes EndÌý–ÌýDeadline to access & submit all remaining graded items
  • Dec 23, 5:00 p.m. MT |ÌýFinal grades post at 5 p.m., available in Buff Portal through theÌý.
  • Dec 25 - Jan 1,ÌýWinter Break, Campus Closed
  • Jan 10, 5:00 p.m. MT |ÌýDegree and certificates conferred by 5 p.m.
  • Jan 17, 11:59 p.m. MT |ÌýLast day to update your diploma name and address in Buff Portal before diplomas and certificates are ordered.

Ìý

Enrollment Open: Jan 02 – Feb 24Ìý |Ìý Course Session: Jan 16 – Mar 10

  • Jan 02, 9:00 a.m. MT | Enrollment Opens
  • Dec 24–Jan 2Ìý| University closedÌý–ÌýThe Ãå±±½ûµØ will be closed at this time, including technical support for enrollment. Please plan accordingly and expect delays in response to any communications sent to the university during that time.
  • Jan 16, 9:00 a.m. MT | Classes Start
  • Jan 16, 9:00 a.m. MT |ÌýProctorU final exam scheduling beginsÌý–ÌýDo this as soon as possible! Must schedule exams 72+ hours in advance. The longer you wait, the fewer available spots.
  • Jan 29, 11:59 p.m. MT | Deadline to petition for a refund for any classes enrolled in before classes started – Must drop class & submit petition within 14 days of registration and before accessing final assessment (See details: MS-DS Handbook)
  • Feb 24, 5:00 p.m. MT | Enrollment Closes
  • Mar 07, 4:50 p.m. MT | Deadline to Schedule ProctorU Exams
  • Mar 07, 4:50 p.m. MT | Deadline to Submit Peer-graded Assignments
  • Mar 10, 4:50 p.m. MT | Deadline to complete ProctorU Exams
  • Mar 10, 4:50 p.m. MT | Deadline to Review Your Peers
  • Mar 10, 11:59 p.m. MT | Classes EndÌý–ÌýDeadline to access & submit all remaining graded items

Enrollment Open: Feb 27 – Apr 21Ìý|Ìý Course Session: Mar 13Ìý– May 05

  • Feb 27, 9:00 a.m. MT | Enrollment Opens
  • Mar 13, 9:00 a.m. MT | Classes Start
  • Mar 13, 9:00 a.m. MT |ÌýProctorU final exam scheduling beginsÌý–ÌýDo this as soon as possible! Must schedule exams 72+ hours in advance. The longer you wait, the fewer available spots.
  • Mar 26, 11:59 p.m. MT | Deadline to petition for a refund for any classes enrolled in before classes started – Must drop class & submit petition within 14 days of registration and before accessing final assessment (See details: MS-DS Handbook)
  • Apr 21, 5:00 p.m. MT | Enrollment Closes
  • May 02, 4:50 p.m. MT | Deadline to Schedule ProctorU Exams
  • May 02, 4:50 p.m. MT | Deadline to Submit Peer-graded Assignments
  • May 05, 4:50 p.m. MT | Deadline to complete ProctorU Exams
  • May 05, 4:50 p.m. MT | Deadline to Review Your Peers
  • May 05, 4:50 p.m. MT |ÌýDeadline to submit all remaining graded items
  • May 05,Ìý11:59 p.m. MT | Classes end - access to all items is removed

Enrollment Open: Apr 24 – Jun 16Ìý |Ìý Course Session: May 08Ìý– Jun 30

  • Apr 24, 9:00 a.m. MT | Enrollment Opens
  • May 08, 9:00 a.m. MT | Classes Start
  • May 08, 9:00 a.m. MT |ÌýProctorU final exam scheduling beginsÌý–ÌýDo this as soon as possible! Must schedule exams 72+ hours in advance. The longer you wait, the fewer available spots.
  • May 21, 11:59 p.m. MT | Deadline to petition for a refund for any classes enrolled in before classes started – Must drop class & submit petition within 14 days of registration and before accessing final assessment (See details: MS-DS Handbook)
  • Jun 16, 5:00 p.m. MT | Enrollment Closes
  • Jun 27, 4:50 p.m. MT | Deadline to Schedule ProctorU Exams
  • Jun 27, 4:50 p.m. MT | Deadline to Submit Peer-graded Assignments
  • Jun 30, 4:50 p.m. MT | Deadline to complete ProctorU Exams
  • Jun 30, 4:50 p.m. MT | Deadline to Review Your Peers
  • Jun 30, 4:50 p.m. MT |ÌýDeadline to submit all remaining graded items
  • Jun 30,Ìý11:59 p.m. MT | Classes end - access to all items is removed

Enrollment Open: Jun 19Ìý– Aug 11Ìý |Ìý Course Session: JulÌý03 – Aug 25

  • Jun 19, 9:00 a.m. MT | Enrollment Opens
  • JulÌý03, 9:00 a.m. MT | Classes Start
  • JulÌý03, 9:00 a.m. MT |ÌýProctorU final exam scheduling beginsÌý–ÌýDo this as soon as possible! Must schedule exams 72+ hours in advance. The longer you wait, the fewer available spots.
  • Jul 16, 11:59 p.m. MT | Deadline to petition for a refund for any classes enrolled in before classes started – Must drop class & submit petition within 14 days of registration and before accessing final assessment (See details: MS-DS Handbook)
  • Aug 11, 5:00 p.m. MT | Enrollment Closes
  • Aug 22, 4:50 p.m. MT | Deadline to Schedule ProctorU Exams
  • Aug 22, 4:50 p.m. MT | Deadline to Submit Peer-graded Assignments
  • Aug 25, 4:50 p.m. MT | Deadline to complete ProctorU Exams
  • Aug 25, 4:50 p.m. MT | Deadline to Review Your Peers
  • Aug 25, 4:50 p.m. MT |ÌýDeadline to submit all remaining graded items
  • Aug 25,Ìý11:59 p.m. MT | Classes end - access to all items is removed

Enrollment Open: Aug 14Ìý– Oct 05Ìý |Ìý Course Session: Aug 28 – Oct 20

  • Aug 14, 9:00 a.m. MT | Enrollment Opens
  • Aug 28, 9:00 a.m. MT | Classes Start
  • Aug 28, 9:00 a.m. MT |ÌýProctorU final exam scheduling beginsÌý–ÌýDo this as soon as possible! Must schedule exams 72+ hours in advance. The longer you wait, the fewer available spots.
  • Sep 10, 11:59 p.m. MT | Deadline to petition for a refund for any classes enrolled in before classes started – Must drop class & submit petition within 14 days of registration and before accessing final assessment (See details: MS-DS Handbook)
  • Oct 05, 5:00 p.m. MT | Enrollment Closes -ÌýNote that this closes one day earlier than usual!
  • Oct 17, 4:50 p.m. MT | Deadline to Schedule ProctorU Exams
  • Oct 17, 4:50 p.m. MT | Deadline to Submit Peer-graded Assignments
  • Oct 20, 4:50 p.m. MT | Deadline to complete ProctorU Exams
  • Oct 20, 4:50 p.m. MT | Deadline to Review Your Peers
  • Oct 20, 4:50 p.m. MT |ÌýDeadline to submit all remaining graded items
  • Oct 20,Ìý11:59 p.m. MT | Classes end - access to all items is removed

Enrollment Open: Oct 11Ìý– Dec 01Ìý |Ìý Course Session: Oct 23 – Dec 15

  • Oct 11, 9:00 a.m. MT | Enrollment Opens -ÌýNote that this is twoÌýdays later than the usual schedule!
  • Oct 23, 9:00 a.m. MT | Classes Start
  • Oct 23, 9:00 a.m. MT |ÌýProctorU final exam scheduling beginsÌý–ÌýDo this as soon as possible! Must schedule exams 72+ hours in advance. The longer you wait, the fewer available spots.
  • NovÌý05, 11:59 p.m. MT | Deadline to petition for a refund for any classes enrolled in before classes started – Must drop class & submit petition within 14 days of registration and before accessing final assessment (See details: MS-DS Handbook)
  • Dec 01, 5:00 p.m. MT | Enrollment Closes
  • Dec 12, 4:50 p.m. MT | Deadline to Schedule ProctorU Exams
  • Dec 12, 4:50 p.m. MT | Deadline to Submit Peer-graded Assignments
  • Dec 15, 4:50 p.m. MT | Deadline to complete ProctorU Exams
  • Dec 15, 4:50 p.m. MT | Deadline to Review Your Peers
  • Dec 15, 4:50 p.m. MT |ÌýDeadline to submit all remaining graded items
  • Dec 15,Ìý11:59 p.m. MT | Classes end - access to all items is removed

Enrollment Open: Dec 27 – Feb 18Ìý |Ìý Course Session: Jan 10 – Mar 4

  • Dec 20Ìý(2021), 9:00 a.m. MT | Enrollment OpensÌý– Enrollment opening 1 week earlyÌýdue to CU being closed during the last week of 2021
  • Dec 24–Jan 2Ìý| University closedÌý–ÌýThe Ãå±±½ûµØ will be closed at this time, including technical support for enrollment. Please plan accordingly and expect delays in response to any communications sent to the university during that time.
  • Jan 10, 9:00 a.m. MT | Classes Start
  • Jan 10, 9:00 a.m. MT |ÌýProctorU final exam scheduling beginsÌý–ÌýDo this as soon as possible! Must schedule exams 72+ hours in advance. The longer you wait, the fewer available spots.
  • Jan 23, 11:59 p.m. MT | Deadline to petition for a refund for any classes enrolled in before classes started – Must drop class & submit petition within 14 days of registration and before accessing final assessment (See details: MS-DS Handbook)
  • Feb 18, 5:00 p.m. MT | Enrollment Closes
  • Mar 01, 4:50 p.m. MT | Deadline to Schedule ProctorU Exams
  • Mar 01, 4:50 p.m. MT | Deadline to Submit Peer-graded Assignments
  • Mar 04, 4:50 p.m. MT | Deadline to complete ProctorU Exams
  • Mar 04, 4:50 p.m. MT | Deadline to Review Your Peers
  • Mar 04, 11:59 p.m. MT | Classes EndÌý–ÌýDeadline to access & submit all remaining graded items

Enrollment Open: Feb 21 – Apr 15Ìý |Ìý Course Session: Mar 7 – Apr 29

  • Feb 21, 9:00 a.m. MT | Enrollment Opens
  • Mar 07, 9:00 a.m. MT | Classes Start
  • Mar 07, 9:00 a.m. MT |ÌýProctorU final exam scheduling beginsÌý–ÌýDo this as soon as possible! Must schedule exams 72+ hours in advance. The longer you wait, the fewer available spots.
  • Mar 20, 11:59 p.m. MT | Deadline to petition for a refund for any classes enrolled in before classes started – Must drop class & submit petition within 14 days of registration and before accessing final assessment (See details: MS-DS Handbook)
  • Apr 15, 5:00 p.m. MT | Enrollment Closes
  • Apr 26, 4:50 p.m. MT | Deadline to Schedule ProctorU Exams
  • Apr 26, 4:50 p.m. MT | Deadline to Submit Peer-graded Assignments
  • Apr 29, 4:50 p.m. MT | Deadline to complete ProctorU Exams
  • Apr 29, 4:50 p.m. MT | Deadline to Review Your Peers
  • Apr 29, 11:59 p.m. MT | Classes EndÌý–ÌýDeadline to access & submit all remaining graded items

Enrollment Open: AprÌý18 – Jun 10Ìý |Ìý Course Session: May 2 – Jun 24

  • Apr 18, 9:00 a.m. MT | Enrollment Opens
  • May 2, 9:00 a.m. MT | Classes Start
  • May 2, 9:00 a.m. MT |ÌýProctorU final exam scheduling beginsÌý–ÌýDo this as soon as possible! Must schedule exams 72+ hours in advance. The longer you wait, the fewer available spots.
  • May 15, 11:59 p.m. MT | Deadline to petition for a refund for any classes enrolled in before classes started – Must drop class & submit petition within 14 days of registration and before accessing final assessment (See details: MS-DS Handbook)
  • Jun 10, 5:00 p.m. MT | Enrollment Closes
  • Jun 21, 4:50 p.m. MT | Deadline to Schedule ProctorU Exams
  • Jun 21, 4:50 p.m. MT | Deadline to Submit Peer-graded Assignments
  • Jun 24, 4:50 p.m. MT | Deadline to complete ProctorU Exams
  • Jun 24, 4:50 p.m. MT | Deadline to Review Your Peers
  • Jun 24, 11:59 p.m. MT | Classes EndÌý–ÌýDeadline to access & submit all remaining graded items

Enrollment Open: Jun 13 – Aug 5Ìý |Ìý Course Session: JunÌý27 – Aug 19

  • Jun 13, 9:00 a.m. MT | Enrollment Opens
  • Jun 27, 9:00 a.m. MT | Classes Start
  • Jun 27, 9:00 a.m. MT |ÌýProctorU final exam scheduling beginsÌý–ÌýDo this as soon as possible! Must schedule exams 72+ hours in advance. The longer you wait, the fewer available spots.
  • Jul 10, 11:59 p.m. MT | Deadline to petition for a refund for any classes enrolled in before classes started – Must drop class & submit petition within 14 days of registration and before accessing final assessment (See details: MS-DS Handbook)
  • Aug 05, 5:00 p.m. MT | Enrollment Closes
  • Aug 16, 4:50 p.m. MT | Deadline to Schedule ProctorU Exams
  • Aug 16, 4:50 p.m. MT | Deadline to Submit Peer-graded Assignments
  • Aug 19, 4:50 p.m. MT | Deadline to complete ProctorU Exams
  • Aug 19, 4:50 p.m. MT | Deadline to Review Your Peers
  • Aug 19, 11:59 p.m. MT | Classes EndÌý–ÌýDeadline to access & submit all remaining graded items

Enrollment Open: Aug 8 – Sep 30Ìý |Ìý Course Session: Aug 22 – Oct 14

  • Aug 08, 9:00 a.m. MT | Enrollment Opens
  • Aug 22, 9:00 a.m. MT | Classes Start
  • Aug 22, 9:00 a.m. MT |ÌýProctorU final exam scheduling beginsÌý–ÌýDo this as soon as possible! Must schedule exams 72+ hours in advance. The longer you wait, the fewer available spots.
  • Sep 04, 11:59 p.m. MT | Deadline to petition for a refund for any classes enrolled in before classes started – Must drop class & submit petition within 14 days of registration and before accessing final assessment (See details: MS-DS Handbook)
  • Sep 30, 5:00 p.m. MT | Enrollment Closes
  • Oct 11, 4:50 p.m. MT | Deadline to Schedule ProctorU Exams
  • Oct 11, 4:50 p.m. MT | Deadline to Submit Peer-graded Assignments
  • Oct 14, 4:50 p.m. MT | Deadline to complete ProctorU Exams
  • Oct 14, 4:50 p.m. MT | Deadline to Review Your Peers
  • Oct 14, 11:59 p.m. MT | Classes EndÌý–ÌýDeadline to access & submit all remaining graded items

Enrollment Open: Oct 3Ìý– Nov 25Ìý |Ìý Course Session: Oct 17 – Dec 9

  • Oct 03, 9:00 a.m. MT | Enrollment Opens
  • Oct 17, 9:00 a.m. MT | Classes Start
  • Oct 17, 9:00 a.m. MT |ÌýProctorU final exam scheduling beginsÌý–ÌýDo this as soon as possible! Must schedule exams 72+ hours in advance. The longer you wait, the fewer available spots.
  • Oct 30, 11:59 p.m. MT | Deadline to petition for a refund for any classes enrolled in before classes started – Must drop class & submit petition within 14 days of registration and before accessing final assessment (See details: MS-DS Handbook)
  • Nov 25, 5:00 p.m. MT | Enrollment Closes
  • Dec 06, 4:50 p.m. MT | Deadline to Schedule ProctorU Exams
  • Dec 06, 4:50 p.m. MT | Deadline to Submit Peer-graded Assignments
  • Dec 09, 4:50 p.m. MT | Deadline to complete ProctorU Exams
  • Dec 09, 4:50 p.m. MT | Deadline to Review Your Peers
  • Dec 09, 11:59 p.m. MT | Classes EndÌý–ÌýDeadline to access & submit all remaining graded items

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No applicationÌýrequired. Click "Enroll Now" below to complete the registration form, pay tuition and start learning right away. Consider starting with a pathway course. Pathways are a series of three 1-credit courses with a focus on either statistics or computer science.Ìý