Hi Steve,

Yes. The course codes can (and do) go as high as 99. But understand that there aren't 99 courses in any one subject. Just because there is a course 99 it does not follow that there was a course 98. Also, don't infer ordinal properties to the numbers.

I suppose I did imply such when I said that 101 would be the first course in a subject. And in fact that is true. In every subject area, the first course is generally designated 01. And a higher course designation can imply a higher, or more advanced, course of study, but often this is not the case. As an example, at my undergraduate school the first physics courses were PHYS 201 and PHYS 202 (there were no freshman physics courses). These were the rudimentary courses you would think of for physics. However, they also offered PHYS 211 and PHYS 212 which were for non-science majors. A non-science major could take 201 and/or 202 since they would substitute for 211 and 212. However, if you took 211 and/or 212, they could not substitute for 201 and 202. The 211/212 courses were simply much less advanced/demanding than the 201/202 courses. (Specifically, 201/202 were calculus based and 211/212 were trigonometry based).