/// <summary>
        /// Get SectionDetailsViewModel of the specified section
        /// </summary>
        public async Task <SectionDetailsViewModel> GetSectionDetailsViewModelAsync(string schoolId, string classId, IGroupRequestBuilder group)
        {
            var school = await educationServiceClient.GetSchoolAsync(schoolId);

            var @class = await educationServiceClient.GetClassAsync(classId);

            @class.Teachers = @class.Members.Where(c => c.PrimaryRole == EducationRole.Teacher).ToList();
            var driveRootFolder = await group.Drive.Root.Request().GetAsync();


            //var schoolTeachers = await educationServiceClient.GetAllTeachersAsync(school.SchoolNumber);
            var schoolTeachers = await educationServiceClient.GetAllTeachersAsync(school.ExternalId); //this works in our tenant

            foreach (var sectionTeacher in @class.Teachers)
            {
                schoolTeachers = schoolTeachers.Where(t => t.Id != sectionTeacher.Id).ToArray();
            }

            foreach (var user in @class.Students)
            {
                var seat = dbContext.ClassroomSeatingArrangements.FirstOrDefault(c =>
                                                                                 c.O365UserId == user.Id && c.ClassId == classId);
                user.Position = seat?.Position ?? 0;
                var userInDB = dbContext.Users.Where(c => c.O365UserId == user.Id).FirstOrDefault();
                user.FavoriteColor = userInDB == null ? "" : userInDB.FavoriteColor;
            }
            return(new SectionDetailsViewModel
            {
                School = school,
                Class = @class,
                Conversations = await group.Conversations.Request().GetAllAsync(),
                //Conversations = Array.Empty<Conversation>(),
                SeeMoreConversationsUrl = string.Format(Constants.O365GroupConversationsUrl, @class.MailNickname),
                DriveItems = await group.Drive.Root.Children.Request().GetAllAsync(),
                //DriveItems = Array.Empty<DriveItem>(),
                SeeMoreFilesUrl = driveRootFolder.WebUrl,
                SchoolTeachers = schoolTeachers
            });
        }