Good grades can be an indicator of someone’s intelligence at times, and at times, it cannot be. This is because there are a couple of students who only study for a while and tend to absorb information quite fast. Not only that, but they are also able to apply that information in creative ways. Such students do get good grades and can be considered as intelligent.
On the other hand, there are students who are not very intelligent but they happen to be extremely hardworking which brings them on the same scale in terms of knowledge. Apart from that, there are some extremely intelligent students who do not study at all and get poor grades. Hence, good grades are not an accurate measure of intelligence.