Your GPA is one of the most important things in high school and college when it comes to the rest of your academic career.It can mean bigger and better opportunities, leading to more money, better jobs, and ultimately a better life.etake classes if need be. Plenty of schools have retake options. If you get a grade you're not happy with and you have the room in your schedule (be sure to think long-term, here) to retake it, consider this as a second chance.