I have a free-for-teacher account and teach multiple sections of one class. I taught two sections in the fall and am teaching one now in the spring. I do one weekly in-class quizzes and revise/recycle them from fall to spring. If I revise an already published quiz from the fall and roll it over into the spring, no problem. If I create a new quiz in the spring which was not given in the fall, students tell me they can't access it. I haven't deleted the students from the fall sections and maybe deleting them is the solution to the problem. I would prefer not to though so I could do some grade comparisons fall-to-spring. Any thoughts?