You can choose the aggregation method that best suits your needs for calculating a final grade or Course total in Moodle.

“Mean of grades” enables you to calculate an average of all grade items and categories.

“Weighted mean of grades” enables you to assign weights to grade items and categories.

“Simple weighted mean of grades” enables you to use a point system to calculate grades.

Grading Criteria:

This example shows 5 quizzes worth 100 points each. The lowest (minimum) quiz grade will be dropped (100 possible points removed from total quiz points). The final grade is the average of the 4 highest scores.

Quiz 1: 100 points
Quiz 2: 100 points
Quiz 3: 100 points
Quiz 4: 100 points
Quiz 5: 100 points

To create this formula in the Moodle Grader Report:

1. From the course main page, in the “Administration” block, click Grades.
2. Select the Categories and items tab.
3. In the “Aggregation” drop-down list for the course, select the aggregation type. In this example, since we want to average the quiz totals, we will use Mean of grades.
4. In the “Actions” column, click the Edit (course name) icon. The Edit categories and items: Simple view screen is displayed.
5. In the “Grade category” area, in the “Drop the lowest” drop-down list, select the number of grades with the lowest number of points you want to drop.  In this example, we will use “1” because we want to drop the lowest grade.
6. Scroll to the bottom of the screen and click Save changes. The Edit categories and items: Simple view screen is displayed.
7. If you are not administrating the quizzes via Moodle, create the quiz columns. For each column you want to add:
   • Scroll to the bottom of the screen and click Add grade item. The New grade item screen is displayed.
   • In the “Grade item” area, add the required information.
   • Scroll to the bottom of the screen and click Save changes.
8. Scroll to the bottom of the screen and click Save changes.
9. Select the View tab. The course total will display the final grade.
   NOTE: The Course total will not reflect the final grade until all grades are input.