Students cannot see the content in the site and the instructor needs to click under Content System to see the course files.
When this happens, it is likely that the files were uploaded by the instructor into the Content System area, instead of the course menu and a content area within the course site. Instead, for students to see the files, instructors need to use the Build Content menu in the course itself. Students cannot see the Content System or any menu item in the Control Panel. The control panel is only available to instructors of the course.