When setting up a new Turnitin assignment, you can choose to hide any marks from the students until the ‘Feedback Release Date’, in other words the date when all marking will be completed.
Feedback release date
The feedback release date is the date and time students can begin viewing the comments and grades you have left on their papers. Feedback can only be released after the due date.
To hide the marks, when setting up a new Turnitin assignment you need to both:
a) ensure that the Feedback Release Date is set as the date when you wish the marks to be revealed to the students and
b) ensure that the marks are revealed on that date and not earlier.