Some assessments or homework activities, such as GCSE subjects, may need to be graded with a letter such A or D. In Moodle, letter grades are essentially number grades that are shown as letters in the gradebook. The advantage of using letter grades is that they act like numbers, so can be used for course total calculations.
The default grade letters within Moodle courses are shown as follows:
When the teacher grades the work, they give a numerical grade which is then converted by Moodle into a percentage and shown as the relevant grade letter in the gradebook.
For example: If the course uses the default letter grades and an assignment ...