There are two limited exceptions. In elementary schools with only a single class at a grade level or secondary schools with only a singular course offering, the limits may be exceeded by two. And in the case where the limit in Column 2 is exceeded in order to keep a student already in the school, the limit may be extended to the Column 1 limit. But in either case, payment is owed to the teacher. Check with your field rep if you are unsure about your situation.