public ActionResult DangKiKHKT(KhoaHocKithuatDTO khoaHocKithuatDTO)
        {
            var school = (T_DM_Truong)Session[Constant.SCHOOL_SESSION];

            if (school == null)
            {
                return(RedirectToRoute("login"));
            }
            khoaHocKithuatDTO.SchoolId = school.SchoolID;
            using (var kHKTKhoaHocKiThuatRepository = new KHKTKhoaHocKiThuatService())
            {
                KhoaHocKiThuat khoaHocKiThuat = kHKTKhoaHocKiThuatRepository.CreateKhoaHocKiThuat(khoaHocKithuatDTO);
                if (khoaHocKiThuat == null)
                {
                    return(Json(new ReturnFormat(400, "failed", null), JsonRequestBehavior.AllowGet));
                }
                return(Json(new ReturnFormat(200, "success", khoaHocKiThuat.Id), JsonRequestBehavior.AllowGet));
            }
        }