It first opened in 1894 on Nathan Road, and originally catered for the children of British people living in Kowloon.

In 1937, the Japanese army invaded China and many European women and children were evacuated from Shanghai to Hong Kong.

In 1979, principal Angela Smith decided that KGV should join the English Schools Foundation, and the transfer was complete by 1981.

He viewed the artwork based on his music (created by Advanced Diploma students) and helped finish a mural on the B-block wall, painting "I am not what you think I am / I am made of gold."

A truncated body of a Spitfire fighter-aircraft was present in the lower south east corner classroom of KGV School up until the late fifties.

The curriculum adopted by KGV, as an international school, is significantly different from the system commonly practiced in Hong Kong.

All subjects (Art, Drama, English, History, Information Technology, Mathematics, Music, Media, Physical Education, Religious Studies, Geography, Science, and Design Technology) are compulsory, and students must learn Mandarin and a European language (French, German or Spanish).

In Year 7, students are not put into academically levelled sets apart from Maths and Chinese classes because it is considered as a "transition" year, offering a wide variety of "inquiry" opportunities, transitioning from the "PYP" inquiry format learning to KGV's Middle School Curriculum.

In Years 10 and 11, all students follow a course leading to iGCSE (International General Certificate of Secondary Education) examinations in their chosen subjects.

Second Language: Chinese (Mandarin) Foreign Language: Chinese (Mandarin), French, German, Spanish Self-taught mother tongue Starting from September 2007, KGV replaced the existing British A-Level Program with the International Baccalaureate diploma, offering the Diploma Programme.

From September 2011 the school replaced the A-Level Programme (which was an option for students who did not want to take IB) with the BTEC International Diploma, a vocational course.

In 2008 and 2009, KGV were back-to-back winners of the Bauhinia Bowl, marking it as the best co-educational sporting school in Hong Kong for that academic year.

25 male and 20 female alumni from KGV have been prior winners of the Bauhinia Bowl sportsboy/sportsgirl of the year award.

This team includes many Hong Kong rugby representatives and the 2010 Larry Abel award winner; Aiden Bradley.

A single word, "MANA" (meaning 'pride'), is shouted out at every practice and match to build up confidence in team members.

Cricket has been a very popular sport with KGV students for many years, with strong Junior and Senior teams.

During the season of 2023-24, KGV B-grade boys' basketball team also won the ISSFHK Silver Division 2 championship.

KGV has produced many swimmers who have won podium places in their events at the HKSSF swimming competitions.

[6] Additionally, KGV swimmers regularly represent the English Schools Foundation at the annual Wheelock Swim for Millions charity race organised by the community chest.

Situated on the south side of the campus, the New Block, completed in 1964, is three stories tall and is currently home to classrooms used for Language Subjects and DT, a computer help centre, and the nurse's office.

The Jockey Club Sarah Roe Centre (JCSRC) was built in 1986 with funds donated from the then Royal Hong Kong Jockey Club and named after Mrs. Sarah Roe, an occupational therapist, who was a founder of the Child Development Centre at the Matilda Hospital.

The Jockey Club Sarah Roe School, originally on the ground floor, was later relocated into the Senior Student Centre.

The Hong Kong Jockey Club Sarah Roe School (JCSRS) is housed on the KGV site, and occupies the ground, as well as most of the first floor of the building.

The remaining two floors are fully occupied by KGV and provide classroom spaces for humanities subjects, as well as staff offices.

Originally equipped with two changing rooms with showers (through the rest of the 20th century), they were converted into two classrooms (X1 and X2), leaving the storage and maintenance sheds on the ground floor.

Although there is no conclusive evidence, it is believed by some students and teachers that the Pavilion was used as a torture chamber during World War II when the Japanese occupied the school, and traditional belief was that it was haunted.

It has markings for various sports, such as rugby, football (soccer), hockey, and also has a long & triple jump track running the perimeter of the field.

The field itself is 100 metres long, and is flanked on its school side by a 100-metre-long sprint track and seating facilities for students.

[8] On the opening day, 575 students broke the Guinness World Record of 'Most Participants in a Beep Test', previously held by a college in Australia.

[11] In 2014, the field was rebuilt and to celebrate, the school went for the world record of Most People Participating in the Multi-Stage Fitness Test.