Co-curricular activities offered by the school include debating, choir, theatre, bands and ensembles, sport, and the
Duke of Edinburgh Award Scheme. Clubs for senior students (the Twelve Club, the Cartesian Club, the
Scipionic Circle, Tom Barrett Society and the Faraday Club) meet once a month, to discuss the current affairs and present papers on topical issues. The school produces at least one musical and two drama productions each year. Productions have included
Les Misérables,
The Pirates of Penzance,
South Pacific,
Guys and Dolls,
Fiddler on the Roof,
My Fair Lady,
The Mikado,
Grease,
Jesus Christ Superstar (2015),
Addams Family (2016), ''A Fleeting Night's Dream
(2017), We Will Rock You
(2018), The Producers
(2019), Grease
(2020), Mamma Mia
(2021), School of Rock
(2022) and Shrek'' (2023).
Academic clubs The headmaster, deputy headmaster, and other senior staff host intellectual clubs composed of high achieving students from year 11 and 12. The members of these clubs are selected on the basis of achievement in academics, leadership and character.
Debating The school competes with other schools' debate teams on a national and international basis. The Senior A team won the GPS on two occasions; winning outright in 1928, and tied first place with Sydney Grammar in 2007.
Cadet corps Founded in 1868, the cadet corps vies with
Newington College as the oldest in Australia. All students in Years 9 and 10 are required to undergo cadet training.
Music The program is held in the sesquicentenary music building. The school has two pipe organs: a chapel organ in the memorial chapel and a large baroque pipe organ in Futter Hall.
Curriculum Year 7 students complete the mandatory 100-hour
Board of Studies (NSW) music course, which introduces them to basic concepts of music in a variety of styles. Year 7 boys participate in a singing program and undertake a theory exam toward the end of the year. As part of the Year 8–10 elective program, students can continue to study music in these years. They are required to learn an instrument as part of this course and regular performance assessments take place. For the
HSC, students can continue their music studies in either the Music 1 or Music 2 courses, with the option of choosing Music Extension as well. Music 1 and 2 cover a variety of music styles, however, the Music 2 course has a focus on
Western art music. Recently the school has been successful in this field, with a number of student performances and compositions nominated for ENCORE.
Co-curricular program The school has seven large Wind Bands, which form the core of the Wind, Brass and Percussion program. The Symphonic Band is the school's elite level band and is composed of musicians typically studying AMEB or Trinity Grade 7 and above. The Wind Orchestra is the middle ensemble within the senior school, whilst Gowan Brae Band is a special ensemble for year 7 students only, which receives extra attention and allows students to develop their talents intensively upon their arrival at King's. The marching band includes members of the Symphonic Band who are enrolled as cadets in The King's School cadet corps. In the Preparatory school, the Concert Band, Wind Ensemble and Junior Band complete the 3–12 wind bands program. The school also runs three stage bands, and numerous other jazz and chamber ensembles for Wind and Brass players. The King's School is particularly renowned for its 'Drumline', a percussion ensemble in the American tradition in which outstanding percussion students perform memorised precision drumming routines, in military-style formation. The school has a chamber string orchestra for experienced players. There is a non-auditioned choir for boys in the senior school, and the auditioned Schola Cantorum; both ensembles are in four vocal parts. In the preparatory school there are three choirs consisting of trebles and altos. A number of small ensembles exist including piano trios, guitar ensembles, percussion ensembles, flute ensembles, clarinet quartet, saxophone quintet and a number of popular music bands.
Regular concerts and events The Music Department conducts a number of regular events each year, including the annual
Festival of Lessons and Carols, Gala Concert, ensembles concerts, and studio recitals for individual performances. Most events are held in either the Recital Room (part of the Sesquicentenary music building) or Futter Hall.
Sport Sport is compulsory for all students. Senior school students must participate in one of rugby union, association football, volleyball or cross country in winter, and rowing, cricket, basketball, tennis, athletics or swimming in summer. If personally selected by the sportsmaster, students may represent the school at shooting outside their regular sporting commitments. Students may participate in a sport in which they have achieved excellence (deemed by the sportsmaster). Cricket, rugby union, association football, basketball and tennis is also available at the preparatory school. The school engages in these sports as a member of the Athletic Association of the Great Public Schools of New South Wales) with other schools:
Saint Ignatius' College,
St Joseph's College,
Sydney Boys High School,
Sydney Grammar School,
Sydney Church of England Grammar School (Shore),
Newington College,
The Scots College and
The Armidale School.
Rugby union The school was instrumental in the development of rugby union in Australia, playing in the first inter-school game against
Newington College in 1870. The school has produced 30 Wallabies and four of them have been captains. In 1880 members of the school rugby team also participated in the first recorded soccer match in Sydney against the Wanderers Club. On their
1888 tour of New Zealand and Australia, the
British and Irish Lions drew against a team from the school. The rugby union 1st XV has won several GPS Premierships in recent years, including in 2018, 2020 and 2023. The team won the 2000
Sanix World Rugby Youth Tournament in Japan. Current and recent
Wallabies Stirling Mortlock,
Benn Robinson,
Dean Mumm,
Lalakai Foketi,
Nick Phipps and
Julian Huxley are former students of the school. Other former students including
Teddy Wilson,
Archer Holz,
Ben Batger,
Daniel Halangahu,
Will Caldwell,
James Hilgendorf,
Ben Hand,
Tom Carter,
Mitchell Chapman,
Hugh Perrett,
Guy Millar and
Tim Davidson play or played recently in the
Super Rugby competition.
Greg Jeloudev and
Dylan Pietsch play for Australia in the
World Rugby Sevens Series.
Joseph Sua'ali'i plays rugby league for the
Sydney Roosters in the
NRL and has signed to play for the
Waratahs.
Rowing In rowing, the school has won the GPS
Head of the River 19 times, including in 2021 and 2022, and the Schoolboy VIII at the National Rowing Championships in 1982, 2001, and 2006. The school won the
Princess Elizabeth Challenge Cup at the
Henley Royal Regatta in 2001 and the
Fawley Challenge Cup in 2006. ==Filming location==