Credits of guangzhou civil aviation Vocational and Technical College: GPA multiplied by the total credits and then divided by the total credits. I would like to ask how to calculate the extra points for class cadres. The extra points for class cadres are calculated separately, generally between 0.03 and 0.05. Specifically, each school is different. General student union members will also get some extra points, about 0. 1, as well as the extra points of parents and directors, which will be directly added to the GPA calculated by the results.