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Colorado Digital Learning Solutions (CDLS) is the state-supported supplemental online program that provides Colorado districts, BOCES, and charter schools access to high quality online courses that supplement their existing course offerings in a 21st century learning environment.
CDLS courses are affordable, high-quality, and standards-based. Students can use them for credit retrieval, advanced courses, curriculum enhancement and/or to resolve scheduling conflicts. CDLS can supplement your local middle school and high school curriculum with a wide variety of courses designed for students in all performance ranges, from at-risk to advanced students.
22,000
students supported
150
districts, BOCES, and charter schools supported
85%
of students pass CDLS courses
ONLINE OPTIONS
Customized District Options
Customized District Options
If you have specific needs for your district, contact CDLS and we will work to find the right solution!
Registration
August 11, 2025 - September 19, 2025
Drop Deadline: October 3, 2025
Semester
August 20, 2025 - December 18, 2025
Registration
December 1, 2025 - January 23, 2026
Drop Deadline: January 30, 2026
Semester
January 7, 2026 - May 15, 2026
Seniors
If seniors need an earlier end date, please contact us.
Drop dates
Districts are invoiced for all enrollments on the roster following the drop date, after registration is closed. Drops made after the drop date will be assessed the full course fee.