relationship between SAT scores and intelligence?

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My claim is about grading practices, and it is this: it is a misconception to think that an A- at Harvard in a course that is equivalent in content to a course at Iowa State means necessarily that the A- from Iowa State in the same course was easier.

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the point that I am trying to make is that there are not going to be very many courses which are equivalent in content at Iowa State and Harvard. If you pick a top tier public school like Berkeley then the comparison is more meaningful; there are many courses which will be functionally equivalent, and it will probably be harder to obtain a good grade at Berkeley than at Harvard.