Turnitin is an online text-matching software that compares submitted texts with other texts which include Internet-based documents, articles from journals, magazines, books and texts submitted to Turnitin in the past. Turnitin then reports the level of similarity between the submitted text and other texts. It is used by many academic institutions in Australia and around the world to promote academic integrity, to support students in developing academic writing skills and to detect plagiarism.
Turnitin develops literacy and information literacy. It helps you to use 'your own words' and to reference other authors' work in your writing. These are important skills in developing critical literacy and in avoiding in accusations of plagiarism.
Your teacher will direct you to submit assignments to Turnitin via Turnitin.com. The submitted work is then compared to a gigantic database of web, journal and academic content to assess similarities to other works.
You can submit work to Turnitin more than once, however, second and subsequent submissions may take 24 hours to be processed.
The second video below, produced by University of Wollongong explains the Orginality Report. Your teacher may use the GradeMarker to provide online feedback which is mentioned at the end of the video.