Access Codes Students must have an access code for each course that uses online homework. This access code is not a password and is not required to log into online homework. Once registered, codes become part of a student’s online homework account record and cannot be transferred to other students. Important! Students need both a class key and an access code to fully access the course. Class keys place you in the correct class. Access codes give you paid access to the class materials. Your instructor provides a class key if he or she has chosen to use self-enrollment for your class. If your instructor chose to upload the roster instead, then there is no class key, and he or she will provide you with your username and password. See your syllabus, or ask your instructor or TA if your class is self-enrolled.