Some schools use a 5.0 scale or even a 12.0 scale. Paparella says she’s seen some schools use a 100-point scale, much like a standard classroom grading scale in which a 90-100 would be an A.

The scale shows how well a student scored in all of their courses on average, with 4.0 being the highest achievable grade (straight As) and 0.0 the lowest (straight Fs).