Courses numbered 100-199 are open to freshmen; 200-299 to sophomores; 300-399 to juniors; 400-499 to seniors. It is recommended that students elect courses in the years for which they are listed. Freshmen will be admitted to courses above the 200 level only with the consent of the instructor and the student’s advisor. Juniors and seniors taking freshman courses may be expected to do additional work. Any course above 499 is a graduate course.