this is the answer I gave to the incoming class last year about grades. Seriously, it's no big deal. Every school ranks their students. And sooner or later, you realize that you just have to study almost all the time. It's not worse bc of the grades:
I just wanted to throw out an answer to a question I get from all of you interviewing students.
Maryland does give out grades, A,B,C etc.
However, this does not foster a environment of competitiveness. This is due to the fact that there is NO CURVE. You get a 80, that's a B. You get a 95 and so does everyone else? great, A for everyone.
When folks find an awesome website that helped them learn a difficult concept, the first thing they often do is email it to the whole class. This was a bit foreign to me coming from a hypercompetitive environment, but it's easy to get used to.