NIETS took part in the activities held in commemoration of Nawamindra Maharaj Day 2025, honoring the benevolence and legacy of His Majesty King Bhumibol Adulyadej the Great (King Rama IX).

On October 13, 2025, the Minister of Education (Prof. Narumon Pinyosinwat, Ph.D.) presided over the merit-making ceremony and alms-giving to monks and novice monks, as well as the memorial service dedicated to His Majesty King Bhumibol Adulyadej the Great, on the occasion of Nawamindra Maharaj Day 2025. The ceremony was attended by executives, government officials, and staff of the Ministry of Education at the Teachers Council Auditorium, Ministry of Education. On this occasion, the director of the National Institute of Educational Testing Service (Public Organization), (Asst.Prof. Sirida Burachat, Ph.D.) assigned the Deputy Director of NIETS (Warunee  Liewwiwatchai, Ph.D.) to attend the ceremony, along with NIETS executives and staff.