Question: I have always been curious about one thing in this movie - when Thornton was taking the oral examination, if he answered all of Dr. Barbay's questions right, why did he only get a D? How did Dean Martin not question that?
Answer: It should also be noted he got all D's and just 1 A. So it wasn't just Barbay that gave him a D.
Answer: We don't know that he answered all the questions right, just that he answered the last one right. Based on Barbay's upset response to that correct answer, it is likely Thornton was at the edge between a wrong answer giving him an F and a correct answer giving him the D he got.
jimba