Student Preview lets you enter the course as a test student and see exactly what students see, submit work, and confirm that release conditions behave as intended.

Blackboard also controls visibility: the course must be available to students, and individual items can be hidden or shown. Hidden content is invisible to students, which is handy while you build but a common source of “I cannot see it” messages if you forget. Before the term opens, walk the course in Student Preview and confirm everything meant to be visible is shown.