A 0% similarity score may be quite rare, especially for long-form assignments that require at least one quote. If a student has made use of quotation marks and in-text citation on a real quote from any material found in our large database, for example, it should show as a match in the Cited and Quoted category. Thus, these types of assignments should typically have a similarity score above 0%.
If there are no Integrity Flags, and no AI writing detected, the 0% score may indicate a document consisting entirely of original material.