Once you have completed a module, your work will be marked using a letter grade, usually A, B, C, D or F. More details of the letter grades for each grading system are shown in the tables below. These letter are each assigned a numeric value such that an average can be taken. In the GPA 4.0 system, an A grade receives 4 points, a B=3, a C=2, a D=1, and an F=0.