Determine if you can add a class or unit to your normal course load in your second year of school. For example, if you normally take 15 units, consider taking 18 units. The extra class should be one that you are confident you can receive a good grade in, as an extra "A" can boost your GPA significantly. If you get a bad grade in that extra class, it could negatively impact your GPA. Consider a fitness, art or other class that may not be as academically rigorous as your other classes.
Attend all class sessions. The grade you receive in a class can be significantly altered if you miss even one test or turn in a poor paper. Since teachers often assign opportunities for extra credit or give pop quizzes during class, make sure you attend every session. If you can't attend all of them, make a friend in the class who can give you notes.
Prepare for exams at least a week ahead of time. Tests have a big impact on final class grades, so make sure you are well-prepared for exams. Start studying several days before the test. Use flashcards or some other studying technique that works for you.
Engage with your professors and teachers. Students who regularly talk with their teachers and participate in class may be more likely to succeed. Participation can influence a teacher's opinion when calculating your final grade. For example, a student who was consistently engaged in class may get a A- as a final grade, while a student that made little effort to participate might receive a B+ grade. The difference between those marks can add up when it comes to your overall GPA.
Do extra credit. Always take advantage of extra credit opportunities, regardless of how insignificant they may seem. A few extra points can mean the difference between an average grade or a good grade. If your teacher has not assigned any extra credit, ask if you can do something to earn it. Many teachers are willing to work with you if you take the time to show an earnest desire to do better in class.