All of my classes use a number of different assignments to calculate a student’s final grade. In some classes, all of the assessments—assignments and exams—are weighted equally. But most of the time, each assessment carries a different weight. Here’s how to calculate grades for both cases…

### Assessments with Equal Weights

AssignmentWeightScore
Writing Exercise20%88
Midterm Exam20%84
Essay20%90
Final Exam20%80

This is really easy. To calculate your final grade, simply average all the scores.

1. Make all scores percentages—out of 100 points—by dividing your score by the total number of points. For example, if you earned a 12 points on assessment with a total 15 possible points, your score is 12/15 = 80/100 = 80 points.
2. Average the percentages. If you’ve earned 80, 90, 82, 72, and 78 on five assessment, the average is calculated by adding the scores and diving that sum by 5 (the number of assessment): 80+90+82+72+78 = 402, then divide 402 by 5. The result in this example is 80.2.

### Assessments with Different Weights

AssignmentWeightScorePoints
Writing Exercise15%8813.2
Midterm Exam20%8416.8
Essay20%9018
Final Exam20%8016

This requires multiplying each assessment score by the weighted percentage and then adding those results.

1. Make all scores percentages—out of 100 points—by dividing your score by the total number of points. For example, if you earned a 12 points on assessment with a total 15 possible points, your score is 12/15 = 80/100 = 80 points. The table above includes the scores already computed as percentages.
2. Multiply the scores by the weight of each assessment. For example, for Reading Quizzes in the table above, multiply the score 92 by 25%—which is 92 x .25 = 23 points. Do this for each assessment.
3. Add the points together. In the above example, the result is 23+13.2+16.8+18+16 = 87.