[manasecret]

Generally, 100 is 1st year, 200 2nd year, 300 3rd year, and 400 4th year. Generally if there is a 200 level course, you are required to take the 100 level course before it or test out of the 100 course. Similarly, if there is a 300 level course, then you are required to pass the equivalent 200 level course before taking it, and the 100 before that.

So for example, Calculus III is designated as MATH 352, Calculus II as MATH 215, and Intro. to Calculus as MATH 101. The last two digits are arbitrary.

In many cases, though, once you get to the 3rd and 4th year, the courses aren't a direct progression from previous courses. For example, for electrical engineering, Overvoltage and Insulation Coordination may be designated EENG 412, but it's not as if there were three courses before it that led directly up to it. Instead, you are required to have a whole mix of courses completed before you are eligible to take that one.