C3032: Grading of Individual Tests

The letter grades for each test are assigned based on the mean and the standard deviation. The following is a table that illustrates how letter grades are assigned to numerical grades:

 At least 1.33 standard deviations above the mean A Between 1 (inclusive) and 1.33 (exclusive) standard deviations above the mean A- Between 0.67 (inclusive) and 1 (exclusive) standard deviations above the mean B+ Between 0.33 (inclusive) and 0.67 (exclusive) standard deviations above the mean B Between 0 (inclusive) and 0.33 (exclusive) standard deviations above the mean B- Between 0.33 (inclusive) and 0 (exclusive) standard deviations below the mean C+ Between 0.67 (inclusive) and 0.33 (exclusive) standard deviations below the mean C Between 1 (inclusive) and 0.67 (exclusive) standard deviations below the mean C- Between 2 (inclusive) and 1 (exclusive) standard deviations below the mean D At least 2 standard deviations below the mean F

So, if for a specific test the mean is 63.7 and the standard deviation is 16, the grades are assigned as is shown in the following table:

 At least 1.33 standard deviations above the mean 84.98 -> 100 A Between 1 (inclusive) and 1.33 (exclusive) standard deviations above the mean 79.70 -> 84.97 A- Between 0.67 (inclusive) and 1 (exclusive) standard deviations above the mean 74.42 -> 79.69 B+ Between 0.33 (inclusive) and 0.67 (exclusive) standard deviations above the mean 68.98 -> 74.41 B Between 0 (inclusive) and 0.33 (exclusive) standard deviations above the mean 63.70 -> 68.97 B- Between 0.33 (inclusive) and 0 (exclusive) standard deviations below the mean 58.42 -> 63.69 C+ Between 0.67 (inclusive) and 0.33 (exclusive) standard deviations below the mean 53.14 -> 58.41 C Between 1 (inclusive) and 0.67 (exclusive) standard deviations below the mean 47.70 -> 53.13 C- Between 2 (inclusive) and 1 (exclusive) standard deviations below the mean 31.70 -> 47.69 D At least 2 standard deviations below the mean 0 -> 31.69 F