Student Preview is where you can view your course from a student's perspective. Student preview creates a course member you can use to view course materials, post to discussions, and submit attempts as a student.
Click the Student Preview icon in the upper right corner, and then select Start Preview
The Welcome to Student Preview banner appears at the top of each page. From the menu, you have the option to view the gradebook, reset the preview, and exit the preview. After you’ve submitted some work as a preview user, you can select View Gradebook to temporarily exit Student Preview and grade the work. Select Student Preview again to continue as your preview user and view the grade as a student. Select Exit Preview to return to the instructor view at any time. Your preview user and activity remain in the course.
Additional Resources:
Video Demonstration: