In Peergrade, each student receives an overall score in each course. This score is called the "Combined score" and is the combination of all hand-in scores and feedback scores across all assignments in the course.
In the course settings page (for teachers) it is possible to set the weights for how hand-in scores and feedback scores are combined:
The default setting is to allocate 50% weight to hand-ins and 50% weight to feedback (in the above example this has been changed to 70% and 30%).
In addition to setting weights on the hand-in score and the feedback score, a teacher can also set weights on the individual assignments (also in the course settings):
By default all assignments count equal (each has a weight of 1.0).
When computing the combined score for a student, the procedure is as follows:
- Compute the hand-in score on each assignment
- Compute the feedback score on each assignment
- Combine the hand-in scores by taking a weighted average over assignments (using the assignment weights) to get a total hand-in score
- Combine the feedback scores by taking a weighted average over assignments (using the assignment weights) to get a total feedback score
- Take a weighted average of the total hand-in score and the total feedback score (using the weights from combined score settings) to get a combined score