A knowledge base article about As an Instructor, can I exclude certain types of content from Originality Check reports? provided by the UC Berkeley IT Service Hub - Knowledge Portal
Yes, instructors can choose to not search certain parts of the Turnitin database. Detailed instructions on configuring this in the Turnitin Advanced Settings are available in the help document titled "As an Instructor, how do I enable and configure Turnitin in bCourses?"