At the top of the Course List there is a button, Course Surveys, this button displays all the surveys for all courses in the current filter settings.
This list shares the filter settings with the main Course list, so clicking the button for Course Surveys carries through all the filter settings.
The information displays a summary of course dates, custom imported dates, custom dates entered on the survey, the effective survey open/close, and an explanation as to how the effective open/close was determined.