Stakeholder Group

David Baumgartner is the Senior Partner and founder of Baumgartner Group (Chartered Accountants) in Kew.

Even though David’s formal schooling finished in 1979, he has never left Trinity.  A brief stint training with the OTG football club convinced Ian Munro that David’s contribution to his old school would be much more beneficial off the field.  Accordingly, he was invited onto the Old Trinity Grammarians Association committee in 1983, a position he continues to occupy after a recent stint as President.  His two boys loved their time at Trinity, revelling in its unique culture, with the youngest finishing his VCE in 2017.  David is an ardent supporter of Trinity’s unique vision that embraces the holistic development of each student – spiritually, emotionally, intellectually, physically, socially, and morally, within a school recognised for excellence.

David’s past community activities have included being Treasurer of Friends of the Royal Botanic Gardens, President of the YMCA Aquarena, a member of the Manningham Council Open Spaces Advisory Committee and a coach at Templestowe Auskick.

Chris was appointed to School Council in June 2018 and served for a number of years as Council Deputy Chair. He is Chair of the Infrastructure, Technology and Environment Committee (ITEC) and a member of the Governance Committee. He is a Partner in PwC’s Assurance Practice covering education and not-for-profit businesses. He has held past governance roles at CatholicCare, Risk Management Institute and Swinburne University. Chris has a son who attended Trinity (OTG 2024) and has a daughter at Ruyton Girls’ School. 

Lynette Hall (née Wong), MBBS FRACGP PGDipManagement, has professional experience and interests spanning mental health, day hospital governance, healthcare quality, safety and healthcare consumer partnership and engagement. She enjoys being part of the TGS community and embraces its vision and values. Her late father (1959), brother (1989) and son attended TGS and daughter, Coordinate Program (2020’s).

John was the Chair of School Council from June 2018 until July 2020, serving on School Council for 3 years. John has an extensive executive and non-executive career history. He is currently Chairman of CSR Limited and Nufarm Limited as well as a Board Member of the Clontarf Foundation and the Heartwell Foundation. John was the CEO of Bunnings from 2004 to 2016 and was also a past Board Member at Ruyton Girls’ School. His son graduated from Trinity Grammar School in 2018.

Kate Hall was a member of the Trinity Leadership Team and Deputy Headmaster, Daily Administration (later renamed Assistant Principal, Daily Administration) a role she held for 21 years until her retirement at the end of 2021. Kate commenced her teaching at Trinity in 1987, teaching English and Literature, then taking on several leadership roles that of Assistant Group master and Head of Year during her early tenure, until appointment to the Leadership role.

Although retired, Kate remains connected and dedicated to Trinity and the broader Trinity community. Kate keeps busy in her retirement spending time with friends and family, reading, playing tennis and enjoys planning for her next trip overseas.

Justice Sharon Johns completed a Bachelor of Arts and Bachelor of Law and in 2013 was appointed as a Judge of the Family Court of Australia and continues to work in that role. In addition to her work as a Judge, she is actively involved in the Trinity Community and provides voluntary services to a number of community and sporting groups.

Tim is an OTG, finishing in 1979. He is the Redmond Barry Distinguished Professor and Malcolm Smith Professor of Asian Law at the University of Melbourne, where he is also the Director of the Centre for Indonesian Law, Islam and Society. He is the author of over 100 publications and is executive editor of the Australian Journal of Asian Law. He was previously the long-serving Chair of the Department of Foreign Affairs and Trade’s Australia Indonesia Institute. He is an inductee in the TGS Gallery of Achievement.

Robert is currently Vicar of Holy Trinity Kew, a member of the Melbourne Anglican Diocesan Schools Commission and a Director of Hume Anglican Grammar. He was previously Archdeacon of LaTrobe and Ballarat and a Director of Ballarat Grammar School. He has also been a missionary teacher in Zimbabwe, Chaplain at Malvern College UK, Head of Religious Education at Newington College in Sydney and Trinity College in Gawler, SA.

Rick was Headmaster of TGS from 1999 to 2013. Prior to that he was Headmaster of Beaconhills College and Deputy Headmaster of Melbourne Grammar School, following a career as an educator. He is a Board Member of Ivanhoe Girls’ Grammar School, The King David School, the Nawarddeken Academy, Trinity College (University of Melbourne), Victorian Registration and Qualifications Authority, the Melbourne Anglican Diocesan Schools’ Commission and the Melbourne Anglican Foundation. He is a Co-founder and Founding Board Member of the Melbourne Indigenous Transition School and Board Chair of The Science Schools’ Foundation.

Murray is an OTG from the 1960s, a past parent and a former long serving member of the School Council. He was Chairman of Council from 1995 until 2004. Professionally, Murray was a general medical practitioner. In retirement, he now undertakes various administrative and project roles within Rotary International. He is an inductee in the TGS Gallery of Achievement.

Thushy was appointed to School Council in November 2023 and is a member of the Finance and Risk Committee. With a distinguished career spanning over 16 years in professional finance, she has garnered extensive expertise across diverse industries, including energy, retail, entertainment, construction, and fin tech. In her capacity as Head of Finance, Thushy specialises in financial reporting, accounting, finance transformation, corporate governance, and compliance. Thushy has two sons and a daughter, one of whom is currently attending Trinity Grammar School, Kew.

Lynette Hall (née Wong), MBBS FRACGP PGDipManagement, has professional experience and interests spanning mental health, day hospital governance, healthcare quality, safety and healthcare consumer partnership and engagement. She enjoys being part of the TGS community and embraces its vision and values. Her late father (1959), brother (1989) and son attended TGS and daughter, Coordinate Program (2020’s).

Lynette Hall (née Wong), MBBS FRACGP PGDipManagement, has professional experience and interests spanning mental health, day hospital governance, healthcare quality, safety and healthcare consumer partnership and engagement. She enjoys being part of the TGS community and embraces its vision and values. Her late father (1959), brother (1989) and son attended TGS and daughter, Coordinate Program (2020’s).