In teaching evaluation, does the number of students a faculty teaches matter? Does it matter if a faculty member teaches a small class or large class? Does anyone cares about the size of the class or only the number of classes the faculty teach each semester?
That depends a lot on local policy. Here (UTFSM, Chile), for load assesment, if a class is small (less than 10 finish it) it doesn't count (unless special circumstances apply, like the last few students taking a discontinued class), if it is very large it counts a bit more (or you might get more TAs or be relieved from other duties). For teaching evaluation, each class counts the same (the class averages are just averaged).