How does this work? I attended a community college for my freshman-sophomore years, a state university for my junior-senior years and graduated in 1999 with a BS in Mass Comm, cumulative GPA of 3.1. Now, I am taking my science/math prereqs at a completely different school. How do my grades add up to one GPA since I have course credits all over the place? I am not a transfer student since I already graduated with a BS and am not enrolled as a full-time student, no major.