Are you sure 79% is a D? I'm from one of the tougher counties in terms of GPA scales, and that's actually a high C. 94-100: A 90-93: B+ 84-89: B 80-83: C+ 74-79: C 70-73: D+ 64-69: D 0-63: F To the OP: Relax, it happens to even the best of us. Just remember that when you start working, what's important is the knowledge you have, not the grade.