You can change your textbook with the approval of your Program Director. Usually, this is done prior to the start of each academic year, in June or July. If there is more than one instructor teaching the course, there needs to be consensus among all the instructors to adopt the textbook(s) for the course. We try to ensure that the same textbook(s) are used from September to August. Should students transfer from one course section to another, they will not have to purchase a different set of textbooks.