A revolution in online education, Learn on Demand offers both parent courses and bite-size classes, called modules, which are about 3-5 weeks long. Learn on Demand parent course offerings are 15 weeks long and include all modules required in a parent course. You can start on a schedule you choose. Modules build toward complete parent courses for accredited, affordable degrees, certificates, and diplomas. While these courses are primarily offered online, some require proctored exams and lab activities that may take place at an approved location convenient for the student. For more details about this kind of online course, click "Learn on Demand" at the left.