It is said that students should not study only for scores nor grades Students should study most of all for learning. It is possible for students to obtain high scores and good grades bur did not really learn that much. What is ideal is for students to get high scores and good grades because they really learned a lot.
Our world of employment, scholarship grants, etc still look at grades as criteria for hiring and screening for scholarships So grades have pragmatic value Therefore, it is best that students work for good grades that genuinely reflect level of mastery.