Here is another secret, grad students all get 4.0 grad gpa or close to that, grad students don't "fail" grad schools, they get kicked out for other reasons, but not likely because of letter grades.
4.0 for all grad programs, Really damn I really should do my masters there. I guess someone should tell my school school that. For some reason I think either either a public school thing or an engineering thing, but that's true for everyone. Although I do get annoyed of how much grad inflation goes on.
My last class prof gave 2 A's, 1 A+ out of 31 people in the class.