CourseWorkMark = QuizMark + LabMark + Ass1Mark + Ass2Mark
                                                   (out of 40)
ExamPracMark   = marks for prac questions on final exam
                                                   (out of 30)
ExamTheoryMark = marks for written questions on final exam
                                                   (out of 30)
ExamMark       = ExamPracMark + ExamTheoryMark     (out of 60)

ExamOK         = ExamMark ≥ 24/60                 (true/false)

FinalMark      = CourseWorkMark + ExamMark        (out of 100)

FinalGrade     = UF, if !ExamOK && FinalMark ≥ 50
               = FL, if FinalMark < 50/100 
               = PS, if 50/100 ≤ FinalMark < 65/100 
               = CR, if 65/100 ≤ FinalMark < 75/100 
               = DN, if 75/100 ≤ FinalMark < 85/100 
               = HD, if FinalMark ≥ 85/100