Courses by National Institute of Education (NIE) / Courses in Sri LankaDiploma in School Management (DSM) 2022/2023 – National Institute of Education (Maharagama) March 20, 2022March 20, 2022 Closing Date – 2022-04-10 Here you can see the Sinhala Advertisement… ad-si-20220311-1 Sinhala AdvertisementDownloadOnline ApplicationApply OnlineSource – Dinamina (2022.03.11)