The regeneration behavior of Similarity Reports differs depending on which version of the standard assignment you are using. Please refer to the section relevant to your assignment type below:
If you are using a Classic Standard Assignment that is set to allow resubmissions, all Similarity Reports will be generated again within an hour of the due date and time of the assignment to allow students' submissions to be compared against one another within the assignment. This is also known as collusion checking. A change in the Similarity Report's percentage may result from the regeneration of the Similarity Reports if matches are found.
It is important to understand that collusion checking only happens after the due date of the assignment if resubmissions are allowed; Similarity Reports generated before the due date of the assignment will not check the submissions within the assignment against one another, but only against external sources (i.e. internet, publications, global repository, etc.).
Although we are confident that papers will be checked against all papers within an assignment upon the assignment due date, we cannot guarantee this. Therefore, any papers that do not appear to have been included in the two-way collusion check will need to be manually regenerated. An instructor can generate a new Similarity Report for a paper by following the guidance here.
Note: If the assignment is set to generate Similarity Reports immediately with the first submission being final, a new Similarity Report will not be generated on the due date to check for collusion. Individual Similarity Reports can still be manually regenerated by instructors if needed.
More information on the Similarity Report settings for Classic Standard Assignments can be found in our guide here.
If you are using the New Standard Assignment, reports will automatically regenerate (collusion checking) on the due date if you have chosen to generate the reports at the time of submission. An instructor can generate new Similarity Reports for all papers in the assignment by selecting the Refresh Reports button shown in this guide.
More information on the Similarity Report settings for New Standard Assignments can be found in our guide here.