How to Calculate an Average Grade?

The method of calculating semester, end-of-term, or end-of-year course grades by adding all numerical grades in a course and then dividing the amount by the total number of grades awarded is called grade averaging.

Teachers calculate the mean—or average—final grade for a marking period using this method, which can be recorded as a numerical grade or a letter grade representing a numerical equivalent (for example, an A– may be equivalent to a 90).

The most popular grading practices in American public schools are grade averaging and the cumulative calculation of grade point averages (or GPAs).

Although grade averaging is a simple mathematical method, grading systems differ from school to school, adding layers of complexity.

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