<p>It’s funny, I just had this conversation with my son when I was asking him what he had registered for in the upcoming quarter and he referred to numbers and I asked him what they meant. </p>
<p>Northwestern now numbers their courses Philosophy 101, 201 (etc) like everyone else, but when I was there, they had a system of A-level, B-level, C-level and D-level. A-levels were typically introductory / survey for non-majors, B-levels were introductory classes intended for majors and maybe one or steps above, C-levels were more advanced (you typically needed X number of C-levels in your major), and D-levels were graduate level. So for example I took Philosophy B10 and Art History B85 and Math C92. Honestly I kind of wish they kept it unique; why be like everyone else?</p>