Turnitin Instructor Guide-Managing exclusions and filters
Managing Exclusions and Filters
Exclude quoted text, bibliographic content, and reference materials from a Similarity Report to remove those matches from the report. Applying exclusions may change the similarity score and provide a more focused review.
Step 1. Select the red Filter icon in the Similarity toolbar.
Filter icon
Step 2. In the Filters and Settings side panel, use the checkboxes to exclude bibliography and quoted text from the report.
Filters and Settings panel
Step 3. Select Apply Changes at the bottom of the panel to confirm your selections and regenerate the Similarity Report.
Excluding small matches removes sources with only a small amount of matching text. For example, you can exclude matches of fewer than 20 words or matches representing less than 10% of the submission.
Example: For a 5,000-word submission, setting the threshold to 10% excludes sources with fewer than 500 matching words.
Step 1. Select the red Filter icon in the Similarity toolbar.
Filter icon
Step 2. In the Filters and Settings side panel, use the radio buttons and text fields to set a word-count or percentage threshold. Sources with a cumulative match below the selected threshold will be excluded.
Exclude matches by word count or percentage
Step 3. Select Apply Changes to confirm the settings and regenerate the Similarity Report.
Step 1. Select the red numerical similarity score in the Similarity toolbar to open the Match Overview panel.
Open Match Overview
Step 2. All matches will be displayed in the Match Overview side panel.
Match Overview panel

Step 3. Select the arrow next to the relevant similarity percentage to view the match in detail.

Step 4. At the bottom of the Match Breakdown panel, select Exclude Sources.

Exclude Sources button in Match Breakdown
Step 5. Select the checkbox for each source you want to exclude. The Exclude button displays the number of selected sources.
Select sources to exclude
Step 6. Select Exclude to confirm the selection and regenerate the report.
Step 1. Select the list icon below the similarity score in the toolbar to open the All Sources panel.
Open All Sources panel
Step 2. Select Exclude Sources at the bottom of the All Sources side panel.
Exclude Sources in All Sources panel
Step 3. Use the checkboxes to select the sources to exclude. The Exclude button indicates the number of sources selected.
Select sources in All Sources panel
Step 4. Select the red Exclude button to confirm. To clear your selections and return to the report, select Cancel.
Step 1. Select the red Exclude icon in the Similarity toolbar to view sources that have been excluded from the Similarity Report.
Exclude icon

Step 2. Excluded sources are listed in the side panel under Excluded Sources. Use the checkboxes to select the sources you want to restore, then select Restore.

Step 3. To restore every excluded source, select Restore All.

Restore excluded sources