A "C" is theoretically average, but whether or not that's true in practice varies widely. Most schools don't fail a high percentage of people, so a C ends up being towards the bottom.
That being said, unless I'm missing something here, a 2.7 is a B-, not a C. Some schools don't have a +/- system, but in that case it's still well above a base-line C.
A: 4.0
A-: 3.7
B+: 3.3
B: 3.0
B-: 2.7
C+: 2.3
C: 2.0
C-: 1.7
D: 1.0
F: 0
If there's no +/- system, it's just 4/3/2/1/0.
As for Monroe College... I live in the area, and I've never heard of it (or at least, know nothing about it). Some local school, I guess. Certainly not a regionally, nationally or internationally known one.