Studying isn't the only way to ensure good grades on your next report card.
This is not a defense of our present age; we will come to our own report card soon enough.
She tried to be humble, but she was clearly proud of the straight As on her report card.
Not studying for a test usually means that you will not get a very good grade on it, which can lead to a bad report card and angry parents or guardians.
A student who was academically gifted may enjoy a cake that features his or her report card.