A line of students walk toward class during the summer.

Welcome to CU Boulder Summer Session! We’re excited you’ve decided to study with us. Summer Session is a great way lighten your load in later semesters or take required courses to free up space for studying abroad or internship opportunities. Undergraduate, transfer, graduate, or nondegree students and guests can find application instructions in the How to Apply section. If you have questions, or are not sure if you fit into the New Students category, please contact the CU Boulder Admissions Office at 303-492-6301 or apply@colorado.edu.

Once admitted, you can enroll for classes on a first-come, first-served basis beginning in early March. We encourage students to enroll early to better their chances of getting into the classes they want. Learn more about when and how to enroll using the How to Enroll section. If you have any questions regarding Summer Session, please reach out to your academic advisor. Nondegree students may see a Continuing Education academic advisor.