If the students failed a required course, they must retake it to fulfill the graduation requirements.

A Student shall not repeat any course which s/he has taken and passed except as required by regulations which prescribe otherwise. The unit/s of a course which a Student has passed but is required to repeat shall count only once towards the number of units for graduation. All courses taken, including multiple attempts, will be counted in GPA calculation.
Currently, all passed courses cannot be retaken. If the students repeat a passed course, the unit(s) and grade of the second attempt will not be counted.