Best Answer: Weighted GPAs allow for classes to count for an extra gradepoint. For example, an AP class often counts as a weighted class. Usually, on a 4.0 scale, an A counts as a 4, a B as a 3, a C as a 2, and a D as a 1. Weighted classes are one gradepoint higher (A counts as a 5, B as a 4, etc) and raise your GPA.