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　　GPA算法
　　Your grade point average (GPA) is calculated by dividing the total amount of grade points earned by the total amount of credit hours attempted. Your grade point average may range from 0.0 to a 4.0.
　　For example:
　　A = 4.00 grade points
　　A- = 3.70 grade points
　　B+ = 3.33 grade points
　　B = 3.00 grade points
　　B- = 2.70 grade points
　　C+ = 2.30 grade points
　　C = 2.00 grade points
　　C- = 1.70 grade points
　　D+ = 1.30 grade points
　　D = 1.00 grade points
　　D- = 0.70 grade points
　　备注：
　　在美国高中期间，大部分课程也是GPA 4.0满分，只有大学任课的AP及部分Honors课程的GPA是5.0满分。