AA                                         4.00                                                      90 – 100

BA                                         3.50                                                      85 – 89

BB                                          3.00                                                      80 – 84

CB                                          2.50                                                      75 – 79

CC                                          2.00                                                      70 – 74

FF                                           0.00                                                      0 – 69