After peer grading is over for an assignment, each submission receives a "Submission score". This score is between 0% and 100% depending on how well the peers evaluated the submission. To get submission scores, the feedback rubric needs to have at least one evaluation criteria that is either Yes/No or Scale.
The way the total submission score is calculated for a submission is by averaging the scores from each of the peers. The score from an individual peer evaluating a submission is obtained by averaging over the criteria in the feedback rubric.
The numerical score for each criteria is normalised to be between 0% and 100%, where 0% is given for the worst possible answer, and 100% for the best possible answer. As an example, in a Scale-question with 5 levels, the different answers will count 0%, 25%, 50%, 75%, 100%.
If a student has flagged part of their received evaluations and a teacher has accepted the flag and overruled the original evaluation, then the teachers new evaluation is used for computing the score instead. If a teacher overrules a specific answer by one student, that answer is taken to be the correct one for that question on that submission. This means that the other student answers on that question are disregarded in the final score of the submission.