I can't imagine a final being different between a T-14 school and a T-50 school. I think people forget at times that these classes teach pretty much the same material, at the same speed, in the same way. The difference in the education itself between the schools is very small, so the differences in final exams will likely also be very small.
T-14 schools go at a much faster speed than other schools. I have plenty of friends in T20 and below and many of their classes are covered over 2 semesters; we do it all in one semester. I think that's one of the key differences - students at T14 have to learn and digest the material faster.