You can learn by getting a new perspective from someone else. This does not work well if the members of the group have not prepared for such a study session . There is no simple way to study and no substitution for repetition . You can improve your grade by studying harder, but you cannot equate hours of study with a specific grade. Everyone learns at their own pace.
People have different levels of aptitude in different disciplines.
If you need help do not hesitate to ask . However, do not wait until the day before the test. If you are not constantly reviewing your notes, you probably will not have any questions . Date Lecture Chap. Test 2 Chaps.