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Colleges report GPA (grade point average) on a 4.0 scale. The top grade is an A, which equals 4.0. This is the standard scale at most colleges, and many high schools use it. To convert your GPA to a 4.0 scale: Letter Grade. Percent Grade. 4.0 Scale.
Those grades correspond to 4, 4 and 3 on the numeric scale. Add up all numeric grades; in this example, the sum is 4 + 4 + 3 = 11. Divide the sum by the number of classes taken to calculate the cumulative numerical average. In this example, the cumulative numerical average is 11 / 3 = 3.66667. Round the cumulative numerical average to the third decimal place; in this example, the result is 3.667.