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.




Semester: January 6th – May 19th, 2021

*Last day to drop without fee in Spring is February 5th, 2021

*Last day for Seniors is May 10th, 2021- Senior Grades are due May 12th, 2021


Summer 2021

Registration: May 10 - June 11, 2021

Semester: June 7 - July 30, 2021

Fall 2021

Registration: August 11 - September 24, 2021

Semester: August 25 - December 17, 2021

Dates are subject to change