100/100

91/100

A

EXCELLENT - outstanding performance with only minor errors

81/100

B

VERY GOOD - above the average standard but with some errors

71/100

C

GOOD - generally sound work with a number of notable errors

61/100

D

SATISFACTORY - fair but with significant shortcomings

51/100

E

SUFFICIENT - performance meets the minimum criteria

Less than 51/100

F

FAIL - some more work required before the credit can be awarded