To raise your GPA in Retro Bowl college, you need to focus on improving your in-game academic performance. Here are some tips to help you achieve a higher GPA:

1. Attend Classes: Regularly attend your classes in the game. Skipping classes can lead to lower grades and a decreased GPA.

2. Participate in Study Sessions: Take advantage of in-game study sessions or assignments when they become available. Completing these tasks can improve your academic performance.

3. Time Management: Carefully manage your time between football activities and academics. Allocate sufficient time for both and avoid overcommitting to one at the expense of the other.

4. Monitor Your GPA: Keep an eye on your GPA within the game. This will help you track your progress and see the impact of your decisions.

5. Make Smart Choices: Be mindful of the choices you make within the game. Some decisions may positively or negatively affect your GPA. Prioritize academic activities over distractions or risky decisions.

6. Improve Academic Skills: If the game offers options to boost your academic skills, take advantage of them. Enhancing your academic abilities will make it easier to excel in classes and improve your GPA.

7. Seek Academic Help: In some versions of Retro Bowl, you might have the option to seek academic help or tutoring. If available, use this feature to get additional support to raise your GPA.

8. Avoid Academic Offenses: Be cautious not to engage in any actions that could lead to academic penalties or violations. Cheating or other academic offenses may result in a decrease in your GPA.

9. Retake Courses: If you're struggling with a particular class or course, check if the game allows you to retake it. Retaking a class can provide an opportunity to improve your grade and GPA.

10. Focus on Long-Term Improvement: Raising your GPA may take time. Focus on consistently making better choices in terms of academics and avoid activities that can negatively impact your GPA.

Remember that your GPA in Retro Bowl's college mode is a significant factor in your in-game success and future career opportunities. To raise your GPA, prioritize your academic performance and make choices that promote academic excellence.