GPA or the Grade Point Average is a ranking system used to assess the performance and talents of the students. This ranking system is used in a majority of the institutions world wide. GPA is calculated on a scale of 4-point, 7-point and 10-point. The U.S. GPA is calculated on a 4.0 scale. Below is the Grade point average ranking system followed in the USA. The U.S. universities usually embrace a 4- point GPA scale. This chart shows the equivalent Grade point average for marks scored in percentage.