var allPlacements = _dbContext.StudentPlacements

                    .AsNoTracking()

                    .Include(s => s.PlacementDates)

                    .Include("PlacementDates.Staff")

                    .Include(s => s.Student).ThenInclude(s => s.Course)

                    .Include(s => s.Position).ThenInclude(s => s.Request).ThenInclude(s => s.Provider)

                    .Include(s => s.Position).ThenInclude(s => s.PlacementType)

                    .Where(s => s.IsClosed != true)

                    .Select(s => new

                            {

                                s, 

                                PlacementDates = s.PlacementDates.Where(s => isvisted)

                            });

​

​