To graduate from high school, students must maintain a minimum overall graduation grade point average or gpa of 2.0. To figure out a current semester GPA, assign the correct points to each grade. For example, if you received an “A” in a class, it equals 4 points, “B” equals 3 points, “C” equals 2 points, “D” equals 1 and “F” equals 0. Add the total grade points earned in all of the classes together, and divide by the total number of classes to get your GPA.