Using an Approved / Not yet rubric
Judge each criterion as approved or not yet, with a confidence figure and no overall score. Every file the student submits counts as evidence, and an assessor can overrule any single judgment.
A points rubric answers "how good was this, out of 30". A competency rubric answers a different question for every criterion: has this person shown it, or not yet. Viva supports both. The switch lives on the assignment form, above the criteria, and it changes three things at once: how the interview reads the submission, what grading returns, and what the student sees.
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On the assignment form, open Grading rubric, switch Judgment style to Approved / Not yet, then write one row per competency in the words your program uses. There are no point values to fill in. Sixteen criteria is fine: the interview covers them across the conversation, and the report lists every one.

Every file is evidence
Ask for every deliverable. Students can attach up to 10 files, and in this mode all of them are evidence: a specification, a session log and a cost sheet are read as peers, not as one main file plus context. The interview draws on the whole set.
Reading the report
After the interview, open the report. The Criteria outcomes table shows each criterion as Approved or Not yet, the evidence Viva cited, and its confidence. Low-confidence rows are tinted: that is where a human look is worth most.
Overruling a judgment
Disagree with a judgment? Click Approve or Not yet on that row. Your decision is recorded with your name and the date, Viva's original judgment stays visible beside it, and Undo restores it. Owners, co-instructors and TAs can decide; graders read.
- No overall score appears anywhere in this mode. The report headline reads "12 of 16 approved", and the student results page lists the criteria with their outcomes instead of a score.
- The grades CSV on the assignment page carries one column per criterion with the outcome, the confidence, and who decided it, so you can feed a badge or credential system.
- Authenticity checks run exactly as they do for a points rubric. The competency switch changes judgment, not integrity.
See also
Instructors get the rest: the walkthroughs, the screenshots, and Ask Viva, which finds the right page from a typed question.