CDU offers three-credit online courses on a trimester basis, with classes beginning in September, January, and May, and one-credit online seminar courses offered throughout the calendar year. Classes meet asynchronously, which means 'not at the same time', so students choose the time of day that is most convenient for them to log into their course rooms. Students may apply at anytime throughout the year. To begin the admissions process, students are invited to visit cdu.edu or call Admissions at 888.254.4238 ext 700.