thinkingingallifreyan replied to your photo: “I’m supposed to look like her, but I don’t really know. There’s...”:
I don't think any UK grading system would allow anyone to get high marks like that WITHOUT being factually correct as well as being interesting to read... I know England is different from Scotland in terms of university grading systems but I don't think they're THAT different that people get away with saying anything. :P
Yes, factual correctness would certainly be a prerequisite for a grade in the 80s and 90s, no matter how liberal a grader the Doctor is! Fact is that he already bases tutoring Bill on the assumption of exceptional grades -“You ever get less than a first, then it's over”. Being interesting to read, being well-written, including original thought... even if the Doctor was adding a good 20 points because he felt like it, it would still have to be an exceptional essay.
That’s all in-show reasoning of course, in practice someone probably just thought “let’s give her scarily high grades to make a point”. But staying within a frame of logic in which characters actually make these decisions, I think the rest of the episode shows as that Bill can surprise the Doctor. She asks questions no one has thought about before. She makes leaps and bounds to come up with an hypothesis. As the says Doctor, “I can see I'm going to have to up my game”.