So we got our grades today, and my friend, who got a 90.2 in some class, was complaining about how NC is one of the few states left that uses the 7-point grading system (93-100 A, 85-92 B, 77-84 C, 70-76 D, <70 F), and that almost all other states use a 10-point system (I'd assume 91-100 A...