Class | Lowest Range | Middle Range | Highest Range |
|---|---|---|---|
O* | 865 | 929 | 1000 |
S+ | 756 | 807 | 865 |
S | 672 | 711 | 756 |
S- | 608 | 637 | 672 |
A+ | 563 | 583 | 608 |
A | 532 | 546 | 563 |
A- | 514 | 521 | 532 |
B+ | 504 | 508 | 514 |
B | 501 | 502 | 504 |
B- | 500 | 500 | 501 |
C+ | 500 | 500 | 500 |
C | 496 | 498 | 500 |
C- | 487 | 492 | 496 |
D+ | 468 | 479 | 487 |
D | 438 | 454 | 468 |
D- | 392 | 417 | 438 |
F+ | 329 | 363 | 392 |
F | 244 | 289 | 329 |
F- | 136 | 193 | 244 |
Z | 0 | 71 | 136 |