With over 1,700 course sections, the 4-, 8-, 12-week and additional-length terms allow students to focus deeply on fewer classes. Students may study at the CSU Mountain Campus, complete an AUCC course, internship, work on a major or minor, or try something new. Explore, experience, and expand through CSU Summer!

CSU Summer Session 2025 Term Schedule: Four-week terms, eight-week terms, 12-week term and terms of additional lengths.

K-12 Programs

The K-12 Summer Programs Portal showcases CSU youth summer programs including credit-bearing, academic, and sport programs.

Summer-Only (Visiting) Students

Summer-Only (Visiting) students are invited to complete summer classes at CSU without current plans to enroll.

Summer Session 2025 Terms

CSU Summer Session 2025 Term Schedule: Four-week terms, eight-week terms, 12-week term and terms of additional lengths.
CSU Summer Session 2025 Term Schedule: 4-week terms: May 19-June 15, June 16-July 13, and July 14-August 10. 8-week terms: May 19-July 13 and June 16-August 10. 12-week term: May 19-August 10. Additional terms of varying lengths.

Summer Session 2025 begins Tuesday, March 25

The preliminary course schedule will be available Monday, January 6. Registration in RAMweb continues on a space-available basis through the add/drop period for each course.

Why Summer?

By participating in summer session, students have the opportunity to graduate and earn earlier, and potentially reduce educational expenses. Summer offers a unique opportunity to focus on one or few courses at a time, making it a great time to complete a challenging course, participate in experiential learning, or fulfill a prerequisite.

Learn about the advantages and financial benefits of participating in CSU summer session courses.
View or download our accessible and interactive Summer Session 2025 information sheet.

CSU Mountain Campus Courses

The beautiful CSU Mountain Campus — 90 minutes up the scenic Poudre Canyon — is just next door, but a world away. It is the summer home for courses open to all majors, and many courses specifically for students pursuing majors in the Warner College of Natural Resources. Experience learning at 9,000 feet! The following courses and programs are open to all students:

•Environmental  Humanities is offered by the College of Liberal Arts and includes Art in Forest Systems (ART 380A5), Environmental History of Colorado (HIST 373), and Environmental Philosophies (PHIL 245, AUCC). Students may take any or all of the two-week, three-credit courses.

•Nature Immersion and Human Wellbeing (PDF)

•Basic Outdoor Skills in Fish, Wildlife, and Conservation Biology (FW-111, hybrid course) may or may not be offered in Summer 2025.