Grades are presumed to be indicators of ability, motivation, achievement and time management skills, as well as predictors of your performance in more difficult professional programs ahead. Your GPA should be calculated for you each year on your transcript, which also allows you to calculate what grades you need to attain a target GPA. One low grade or even a poor semester does not mean that you should give up all hope. If you have difficulty with a course, it is your responsibility to seek help! A useful first step is to meet with your instructor during office hours. Head off problems early.
Time management and studying science successfully are HUGE factors in getting top grades especially if you are involved in extracurricular activities.
Helpful tips in studying science can be found on the following website: