On 23 March 2025, St. Mary's School Past Pupils Union at Udon Thani, Thailand, held an elective assembly and elected a new Union leader and the Councillors, as the team of the term of the current team had ended. For this event, the Animator of the School community, Sr Radomkit Saisawat Teresa, the Delegate of the Past Pupils' Federation at Thailand (THA), the Sisters of the community, the current President and the Councillors of the Union were present. Sr Ratana Radomkit and the other Sisters shared their insights and provide training to prepare for this election. Ms Jarinee Prompolchon was elected as the new Union leader of St. Mary's School. There was a moment of gratitude for the previous leader and a celebration of the new Union leader's appointment.