Colorado Digital Learning Solutions (CDLS) is the state-supported source for online learning options that provides Colorado districts, BOCES, and charter schools access to high quality online courses that expand 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.