General Grading
I generally base my 4, 3, 2, 1 scores on the following scale.
100% (4+) 99% - 95% (4) 94%-90% (4-)
89% - 88% (3+) 87% - 75% (3) 74% - 70% (3-/2+)
69% - 51% (2) 50% - 0% (1)