Academic grades are an important measure of a student's academic performance. However, there are several synonyms that can be used to describe academic grades. One such synonym is "scholastic achievement," which refers to a student's level of success in their studies. Another synonym is "academic performance," which describes how well a student has performed in their coursework. "Grade point average" is also a commonly-used synonym, which measures a student's overall performance in their academic courses. Ultimately, no matter what synonym is used, academic grades are an important indicator of a student's success and potential for future academic achievement.