If you get Câs in the AP classes, two Aâs and one B, your GPA will end up being: 3.4 Sophomore year, you take five regular classes and finish with 4 Aâs and a B. Your GPA is now: 3.8 Your cumulative GPA is 3.6.f you get Câs in the AP classes, two Aâs and one B, your GPA will end up being: 3.4 Sophomore year, you take five regular classes and finish with 4 Aâs and a B. Your GPA is now: 3.8 Your cumulative GPA is 3.6.