Attend class regularly. Some teachers give extra credit for attendance.
Avoid overloading. Take only classes that can fit into your schedule. You'll tend to cram more if you have too many subjects.
Take notes in every class. By doing so, you get to record important pointers in your teacher's discussion. It also helps improve your listening skills.
Be friends with your classmates. It is easier to study if you are cordial with the people around you. You can also ask them for help in topics you are having difficulties with.
Befriend your teachers. Like your classmates, you should have a light relationship with your instructors. You will expect less pressure from your teacher if you know that he's an ally.
Have a regular study time. Make yourself accustomed to studying frequently.
Using flashcards is a plus. It will help improve your familiarity with mathematical equations, vocabulary words and scientific formulas. You'll find it easier to solve math problems and essay writing exams.
Study for your exams in advance. Limit your review to at least one week before the day of the test to keep your mind fresh and relaxed.
Make solving mathematical problems a habit. This will improve your analytical thinking skills and help get you prepared for the harder questions on exams.