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How to grade group work fairly

Every group grade complaint is the same complaint: one number stretched over four levels of effort. The fix is structural, not motivational. Split the grade so individual work is scored individually, make contributions traceable while the project runs, and the free rider problem mostly dissolves before it starts.

Split the grade, and announce the split on day one

Roughly 45 percent individual, 55 percent shared: individual contribution and reflection on one side, product quality and delivery on the other. The announcement is half the intervention; behavior changes in week one when students know hiding and carrying both show up in the number. Our group project rubric is built on exactly this split.

Make contributions traceable

• A one-page contribution log per student, updated at each milestone, listing what they produced and when. Collected before grades are discussed, ever.
• Roles assigned by function, not by section: researcher, editor, designer, coordinator. Dividing by paragraph produces four mini-projects stapled together.
• Shared documents keep their own receipts: version history shows who wrote what and when, if a dispute needs settling.

Check in at the midpoint

A five-minute status conversation per group at the halfway mark, against the collaboration criterion, catches the silent member and the steamroller while both can still be fixed. Found at the deadline, those problems can only be graded.

Use peer input as evidence, not as the grade

A short structured form, who did what, rated on contribution, works as a cross-check on the logs. It should inform your judgment, never replace it: peer scores alone reward popularity and punish the student who insisted on quality.

Handle the two classic disputes with policy, not improvisation

• The night-before redo: a member who rewrites everyone's sections without agreement loses collaboration points even if the product improved. Announce this in advance and it almost never happens.
• The ghost: a member who produced nothing traceable is graded on what the log and artifacts show, which is the individual 45 percent at the bottom band, while the group's product score is protected from their absence.