[9] TAS is also the only member of the Athletic Association of the Great Public Schools of New South Wales (AAGPS)[10] located outside of the Sydney metropolitan area.

[4] This idea was taken over by prominent members of the Church of England in the northern districts of New South Wales, and 500 pounds was obtained from the Society for Promoting Christian Knowledge, as a result of the efforts of the first (and only) Bishop of Australia, William Grant Broughton.

In 1881, it was determined that the plan to build the school at Blandford was unaffordable, and a suggestion was made that it should be built on the New England Tablelands at Armidale.

The additional capital required, to the amount of 6,000 pounds, was raised by James Ross, Archdeacon of Armidale, and his leading laymen.

The foundation stone of the main building, designed by noted architect Sir John Sulman, was laid on 22 February 1893, by the Governor of New South Wales, the Rt.

Also that year, TAS joined the Athletic Association of the Great Public Schools of New South Wales (GPS) in Sydney, and has remained a member ever since.

Other facilities include a heated indoor swimming pool, rifle range, cattle stud, chapel, gymnasium, library, music centre, computer rooms,[11] climbing wall, weights room, an indoor cricket centre, several indoor and outdoor basketball courts, seven tennis courts, rugby and soccer fields, and cricket wickets.TAS currently has six school boarding houses, named Abbott, Croft, Dangar, Tyrrell, and White, and an as yet unnamed 64-bed girls' boarding house which opened its doors in 2018.

[15] Co-curricular activities available to TAS students include: Debating and public speaking, drama, band, orchestra, choirs, art, photography, Duke of Edinburgh's Award Scheme, and a school Poll Hereford stud which exhibits cattle at local and regional agricultural shows.

[6] In the past, a similar Christian service trip has been offered to Year 10 and 11 students to Thailand, assisting at the McKean Leprosy Rehabilitation Centre and the Agape AIDS Orphanage near Chang Mai.

Other service offerings have included a visit to helping indigenous boys and girls at Yipirinya School in Alice Springs, Northern Territory.

TAS students may participate in a variety of sports including: athletics, basketball, canoeing, cricket, cross country, hockey, mountain biking, netball, rugby union, rifle shooting, soccer, squash, rowing, swimming, tennis, triathlon, volleyball and water polo.

Broughton was originally a boarding house; Green and Ross were inaugurated in 1983 by Prince Edward, during a private visit to the school.

The Armidale School has a leadership, service and adventure program which has an emphasis on outdoor education and is designed to develop a sense of responsibility and self-confidence through activities such as abseiling, whitewater kayaking and bivouacs.

[17] Surf life saving commenced at TAS in 1967, as a service component for the Duke of Edinburgh Award Scheme introduced at the school earlier that year.

As part of the school's adventure program a number of expeditions have taken place including five treks of the Kokoda Track in Papua New Guinea, the Sea to Summit cycle ride from Pambula to the peak of Mount Kosciuszko, and to Antarctica.

TAS is a member of Round Square,[19] an international organisation of more than 200 schools worldwide which subscribes to the philosophy of Kurt Hahn (1886–1974), a renowned educationalist, who founded the idea of experiential education through such initiatives as the Duke of Edinburgh's Award Scheme and Outward Bound.