Setting Up Peer Evaluation as a Group Score Multiplier

With Peer Evaluation as a Group Score Multiplier mode (referred to moving forward as simply Multiplier mode), teachers can set peer evaluation to act as a scaling factor on the group score rather than a standalone grade component.

Students who are rated at or above the group average keep their full share of the group score, while those rated below have their share proportionally reduced.

This option allows teachers to better recognise individual student contribution within a group assessment by adjusting each student's share of the group score based on how their peers rated their contribution.

In this guide, we’ll cover:

• Enabling Peer Evaluation as a Group Score Multiplier
• How the Multiplier is Calculated
• Reviewing the Multiplier
• What Students See

Enabling Peer Evaluation as a Group Score Multiplier

The multiplier mode is best enabled during the assessment's initial setup by following the steps below:

1. Open the Group Assessment Requirements page for the assessment.

2. Toggle on the Peer Evaluation component

3. Select Use as multiplier on the group report score. The weighting inputs will disappear, as a scalar is used instead.
   
   
   

4. In the Minimum value of multiplier field that appears, enter the lowest multiplier a student can receive. The valid range is 0.52–1.00. The field defaults to 1.00. At this value, no scaling occurs, and every student keeps their full share, so a lower value must be set for the multiplier to take effect.
   
   
5. Click Update Settings to save.

How the Multiplier is Calculated

Each student's multiplier is derived from how their peer evaluation score compares to the group's peer evaluation score average.

Students at or above the group average receive a multiplier of 1.00 and keep their full share of the group score. Students below the average receive a reduced multiplier, with the minimum value acting as a floor.

A few things to note about how the multiplier is calculated:

• Only students who completed all their peer evaluations are included in the group average. This prevents non-completions from pulling the average down for everyone else.
• Students who didn't complete their peer evaluations receive the minimum value of multiplier directly, without going through the formula.
• Students in a solo group (one active member) always receive a multiplier of 1.00, since there are no peers to rate them.
• If Self Evaluation is enabled, a student's self-evaluation score is included in the calculation as if it were another peer evaluation score; it feeds into the same formula rather than adding a separate component.

The Formula

Multiplier = √(student peer eval score ÷ group average peer eval score)

The result is rounded to 2 decimal places and clamped to the range between the Minimum Value of Multiplier and 1.00. The square root in the formula ensures the adjustment stays proportionate; a student rated below the group average is penalised, but not so severely that a single peer evaluation round has an outsized effect on their grade.

A detailed breakdown of how the multiplier is calculated can be found below.

Worked Example

• Minimum multiplier: 0.80.
• Group size: 4 students
• Group report score: 80
• Group average peer evaluation score: (100 + 80 + 60 + 40) ÷ 4 = 70

Multiplier Calculation

Final Score Calculation using the Final Multiplier

The Moderation tab will display the scores as below.

Reviewing the Multiplier

Moderation Tab

The Moderation tab shows each student's multiplier to two decimal places. If a student's group hasn't completed their peer evaluations yet, the multiplier column displays Pending until the peer evaluation is complete.

Marking Page

In the right-hand Summary panel on the marking page, each group member's score breakdown can be expanded. In Multiplier mode:

• The Peer Evaluation row displays Group score multiplier as its subtitle, with the multiplier shown as a plain number (e.g. 1, 0.93).
• If peer evaluations are still in progress, the row shows Pending until peer evaluation is complete.
• If enabled, the Self Evaluation score is hidden, since self-evaluation scores feed into the multiplier rather than being processed as separate component. 

What Students See

The process of submitting a peer evaluation stays the same for students regardless of which option is chosen. Once feedback is released, however, students can view their multiplier in the feedback viewer.

The Peer Evaluation feedback card displays the multiplier prominently above the label Score Multiplier, in place of the usual score and weighting.

Clicking View Feedback opens the detailed peer feedback page, showing the rubric breakdown and any peer comments received.