It is said that " The More You Sweat in Peace, The Less You Bleed in War".
Courses helps you to know how much you have prepare for the exam and according to that you can decide your preparation strategy.
Learning from the clive lectures helps you to adjust with the pressure associated with the exam and helps you to perform well. Also it helps to know the exam pattern and solving questions in particular given time.
It does not matter which exam you give, the ultimate purpose is to score highest marks or marks above the cut off . Our faculties helps you to know your strong and weak areas and according to that you can work on those areas for better improvement. By doing this you are refining your strategy which ultimately boost your score in real exam.