In the Moderate quiz screen, clicking on a student's name shows their attempts. When viewing an attempt, there can be a button to either delete/ remove the attempt, or to not count its results.
This idea was considered when developing our product plan for Q1 2019 and is not expected to influence development within Canvas at this time.
This idea will remain open for vote.
If this idea is in the top 10% by vote next cycle it will be reconsidered.
Read more about the feature idea process: