GPA

Is it possible to raise my 3.0 cumulative GPA to a 3.4 in 2 years?

Do a calculation in a spread sheet. Factor in how many creits x GPA and find out.

THe most important thing you can do is do the best you can! Change how you study…here are tips
http://talk.collegeconfidential.com/high-school-life/2026961-what-to-do-when-you-arent-doing-well-in-a-hs-class-p1.html

I believe that you could since at least at my school I was able to raise a 2.9 to a 3.6 in one year somehow without AP or weighed classes btw

Yes.

Definitely. My freshman year of high school I managed to end the year with two C’s and an few A’s and B’s. I got F’s and D’s in two classes at least each marking period. However I came back my sophomore year (without any honors classes) and got all A’s and one B and raised my GPA from a 2.9 to a 3.5. I just finished my junior year taking honors courses and now I am a senior going to take AP courses. You can most certainly increase your GPA with just regular classes, however you will see a more dramatic change taking honors courses. Good luck!!