Class sizes vary over a wide range.
Math courses are typically in the 40 to 50 student range. Freshmen engineering courses may be as big as 60 to 80 students in the lecture, yet in the laboratory section of these courses the group is broken down into smaller sections, and at least in one semester of the freshmen year the lab is limited to fewer than 20 students. Yet in the recitation , the class is broken down into groups of about 30 students. Engineering students take very few courses of this size. The sophomore level engineering courses may have 60 to 80 students.