I wonder if such questions should be avoided at least at this early beta stage, if not "for all time". I do not think this is the kind of question that experts ask each other, as the reasonable things to consider when beginning to deal with such a question are: "why is it important to teach students who do not have the background?" and "why don't the students have the proper background if this is important to them?".
Could we instead shift our focus slightly by instead asking: "What background knowledge is helpful for enabling students to understand