Your cumulative GPA covers your entire academic record, not just one term. Here's how it's actually calculated.
Your cumulative GPA is the average of every grade you've earned across all semesters and classes, weighted by how many credit hours each class was worth โ not just a simple average of your semester GPAs.
The steps:
A 4-credit class with an A affects your cumulative GPA more than a 1-credit class with an A, because it's weighted by credit hours. This is why a single bad semester in a heavy course load can shift your cumulative GPA more than the same grades in a lighter semester.