Teachers can control when students review an assignment when they create the assignment. In the Submission Options section, they can choose Release for review on submission or Release for review by teacher. If teachers want students to be able to review their assignment as soon as they submit it, they should leave the default selection of on submission. If teachers want to control when students can review, they should select by teacher.
Once teachers are ready to release the assignment for review, they can click on the Release for Review link from the page menu.