Complex sentence: Additionally, class sizes are far below national levels, with most ranging between 5 and 15 students; it is not uncommon to have a class with a faculty member and only one student, if there are no other students registered for a specific course.
Split into simpler sentences: Additionally, class sizes are far below national levels, with most ranging between 5 and 15 students. Though it is not uncommon to have a class with a faculty member and only one student, if there are no other students registered for a specific course.