Many instructors like me who have used, now defunct, Google+ Communities as a SHARED-LEARNING platform for my students.  In the process of creating a Learning Community, the G+ platform asked the creator, you, if the community was to be viewed and accessed by the PUBLIC, by only the students in the class, or by the entire educational institution.  Obviously, the PUBLIC access option should NOT be even considered.  You as an instructor do not want info about students, their photos, their views, and any other personal info out there in the cloud for anyone to see and probably misuse.  Whether you want the Administrators, Academic Advisors, and other faculty to see the wonderful and amazing work they are doing should be based on the students' views.  If they want to keep it within the class settings then you as an instructor should honor that.