CSU Summer

CSU Summer at Colorado State University supports summer session credit courses, Accelerated Programs, and K-12 Summer Programs. Registration for Summer 2026 is open and continues through the add/drop period for each course.

Enrolled CSU students and “Summer-Only” (visiting) students are welcome to take classes in person and online. With 1,600+ course sections, the four-, eight-, 12-week and additional-length terms, students may focus deeply on fewer classes. Students may complete AUCC or other courses, study at the CSU Mountain campus, or try something new. Exploring an additional minor, major or certificate options is be especially helpful when compatible with career goals. Students gain career competencies through internships, research, and field courses. 

Degree-seeking students can can graduate in 3-3.5 years by taking summer courses with 35+ Accelerated Programs (AcceleratedPrograms.colostate.edu).

Discover the possibilities and easily search courses at Summer.Colostate.EDU!