code: def get_hidden_members(self, user=None):
          
          hidden_members = []
          for member in self.members.all():
              show = False
              if member.can_view_eighth:
                  show = member.can_view_eighth
  
              if not show and user and user.is_eighth_admin:
                  show = True
              if not show and user and user.is_teacher:
                  show = True
              if not show and member == user:
                  show = True
  
              if not show:
                  hidden_members.append(member)
  
          return hidden_members
docs: Get the members that you do not have permission to view.
  
          Returns: List of members hidden based on their permission preferences