You can check what your students have access to and can actually see on your course by using the Student Preview Mode. Any content you have hidden, or set to release by date, grade or group - as well as any empty pages will not be visible with Student Preview mode active. Student Preview Mode also allows you to test Blackboard's interactive tools as a student. This includes taking tests and surveys, enrolling in groups, and testing the grade center.
To activate Student Preview mode: