MIT used a 5 point scale, instead of 4. A company I interviewed with lost all enthusiasm when they learned my A- GPA was really a B-. And I learned to keep my mouth shut.
In my day, the only info MIT gave out was what quarter of your class you graduated in.
I was in the upper quarter of my class. This concealed my C average in math and physics.
However, I used my math to get a B in physical chemistry (when all too many flunked the course). Then I used my math and physics for part of my PhD thesis in Molecular and Cellular Biology at Harvard. So C average MIT math and physics students can do OK!