Trinity provides an abundance of opportunities which fosters the development of boys into men and allows boys to turn potential into reality.

Life at Trinity


Trinity provides an abundance of opportunities which fosters the development of boys into men and allows boys to turn potential into reality.

Head Master's welcome

Trinity provides boys with a thoroughly Christian education in mind, body, and spirit.

Each year when I meet the new boys on their first day of school, I am filled with the hope that every student will be able to discover his unique God-given talents, enabling him to grow into the best man he can be.

With an extensive range of world class educational programmes — including the International Baccalaureate, vocational competencies and one of the broadest range of co-curricular activities — Trinity provides a wealth of opportunities for every boy to develop his skills, whatever they might be.

Fuelled by a pastorally aware culture with exceptionally high levels of individual student attention, we pride ourselves on knowing, understanding and nurturing every student. I have the privilege and the pleasure of conducting one-on-one interviews with our senior graduating students. I witness the true success of a Trinity education by speaking with the well-rounded young men our boys have become.

If you want your son to receive an outstanding Christian holistic education where he will be nurtured to grow into a man who is clear and passionate about his unique talents, then consider Trinity. We look forward to welcoming your family to the Trinity community where your son will have his best opportunity to realise his unique potential, passions and purpose in life.

“Detur Gloria Soli Deo” (Let glory be given to God alone),

Mr Tim Bowden, Head Master


2020 Educational and Financial Report to The NSW Education Standards Authority

Quick Facts



Strathfield | Preparatory School Pre-K to Year 6
Summer Hill | Junior School K to Year 6 and Middle and Senior 7 to 12
Woollamia | Field studies Centre at Woollamia in the Jervis Bay area



100 graduates’ average ATAR – 94.62
9 perfect scores of 45 – ATAR 99.95
32 IB Distinctions – score of 40 or more (ATAR of 98.25 or more)


25 HSC All Round Achievement Awards (2018)

3 Top Achievers in Course
60 HSC Distinguished Achievers
3 students selected for showcases and exhibitions


35 HSC All Round Achiever or IB Distinction recipients (2018)

26 ATAR 99 or more (11%)
49% ATAR 90 or more
69% ATAR 80 or more



Which grew from just 27 when the school was founded in 1913


Find Out More

To find out how Trinity can help your son to realise his potential, passions and purpose in life,  download our prospectus.
Download our Prospectus


At Trinity, your son will experience a wealth of opportunities, for the School provides arguably the most extensive curriculum of non-selective independent boys’ schools in NSW.

Holistic Teaching

At Trinity, we focus on developing the whole student regardless of whichever programme he embarks upon, allowing him to gain confidence in his abilities and to achieve excellence in whatever he may pursue.

Pastoral Care

The School’s proven Pastoral Care network means your son will be known, cared for and guided to grow in mind, body and spirit. He will learn in a positive, passionate and harmonious environment, one where everyone feels part of the ‘Trinity family’.


Trinity’s School Tuition fees ranging from $18,870 to $34,770 include all text books, stationery packs, curriculum related excursions and camps, co-curricular activities and sport, access to information technology resources.* See FAQs for more information.

Our History

Just before the start of WWI in 1913, a visionary by the name of George Chambers established a small parochial school in the Sydney parish of Holy Trinity at Dulwich Hill. Twenty-nine boys were enrolled at the opening of the School year in 1913, and the number had reached 57 at the end of that year. G.A. Chambers had been appointed Rector of Holy Trinity Dulwich Hill in 1911. Over the next 15 years he accomplished much, one notable achievement being his appointment as foundation Bishop of Central Tanganyika. Here the link between Trinity Grammar and the Church Missionary Society was forged. Having been appointed Warden of the School, Chambers’ immediate task was to search for a Head Master. Thus K.T. Henderson became the first Head Master of Trinity Grammar in February 1913. Henderson, who served a term of only 6 months, was followed by W.G. Hilliard.

In November 1915, the School formulated its motto, “Detur Gloria Soli Deo” (Give glory to God alone). The School colours were chosen to reflect the liturgical season of Trinity, namely green. However, by 1942 the prospects for Trinity were so grim that it was decided to close the School. As a last attempt to save the School, the Council appointed J. Wilson Hogg as Head Master in 1944. Mr Hogg was an educational visionary; he moulded a school and made a reality of the hopes and aspirations of the Founder. When J. Wilson Hogg retired in 1974, Trinity was flourishing and had become one of the leading Independent schools in NSW. In 1975 Roderick Ian West was appointed the School’s tenth Head Master.

In his 21 years as Head Master, Mr West presided over a most ambitious period of sustained growth for the School. Mr West continued to set a style which has brought the School to great eminence and international recognition and under his leadership the School continued to prosper.

Mr Milton Cujes commenced as Head Master in June 1996. An Old Boy of the School, School Captain in 1968. He then returned as a teacher from 1972 to 1981. Mr Cujes returned to Trinity to lead the School into the new millennium. Since 1996 the School has continued to thrive with some 2000 students, building on what has gone before; taking on new initiatives; seeking challenges such as the International Baccalaureate, the Middle School concept, Founder’s Building complex, car parks, the Junior School and the Centenary Centre. He retired in December 2017 after almost 22 years as Head Master.

The Reverend Timothy Bowden commenced as Head Master in January 2018. Formerly Chaplain and Head of Christian Education, and later Head of Middle School at St Andrew’s Cathedral School and most recently Principal at Inaburra School since 2011.

To learn more about the history of Trinity Grammar School please visit the School Archives.


Despite reaching this point in the page, we may not have answered all your questions. Fortunately, we have a list of answers to all the questions parents often ask us.

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