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Summer Session 2025

Earn the credit you need during the summer to keep advancing your degree. CU Boulder welcomes current, visiting, and high school students who want to take advantage of popular courses taught by CU Boulder's top faculty during a series of convenient, short terms. Customize a schedule that works for you.

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Summer 2025 Schedule


Maymester:

May 12 - May 30

 

Session A:

June 2 - July 3

 

Session B:

July 8 - August 8

 

Session C:

June 2 - July 25

 

Session D:

June 2 - August 8

 

Augmester:

August 4 - August 20

 

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Featured Stories and Information

Apply for the 2025 Summer Session Online Teaching Academy

Applications are now being accepted for the 2025 Summer Session Online Teaching Academy.

Summer Courses Are Now Available to Search

Make your plan for Summer Session 2025

Administrative Closure July 5

Learn more about the closure on July 5.

Enroll in a Later Summer Session

Earn credit during convenient, short terms.

There’s Still Time to Enroll in Summer Session 2024

Choose from hundreds of courses and earn the credit you need.

The Benefits of Summer Session

Did you know that thousands of students enroll in summer classes each year? As you start to plan your summer, consider the benefits of taking one or two summer classes during convenient, short sessions offered between May and August.

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Thank you for your interest in Summer Session. Fill out the below form to get periodic updates and reminders about important summer dates. If you have questions, a member of our Summer Session team will contact you.

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Important Dates

March 5, 2025
Summer Session registration begins

May 12, 2025
Maymester session classes begin

June 2, 2025
Session A, C, and D classes begin

July 8, 2025
Session B classes begin

August 4, 2025
Augmester classes begin

 

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