One of the Special Assistance Plan (SAP) schools in Singapore, it offers a four-year secondary education leading to the Singapore-Cambridge GCE Ordinary Level examinations.

[2] The "8.5 mile" site of the present Upper Changi Road campus was acquired in the late 1950s, and on 15 March 1959, the new school's foundation stone was officially laid by Devasahayam David Chelliah, the Archdeacon of Singapore.

And finally on 25 January 1960, the new AHS officially opened and blessed by Henry Wolfe Baines, the Bishop of Singapore.

[5] In 2005, a new school building and the AHS Heritage Centre were officially opened by John Chew, the Bishop of Singapore.

An indoor sports hall was completed in 2008 and was the hosting venue for the inaugural 2009 Asian Youth Games FIBA 33 (3-on-3 basketball) event.

Disciplinary actions include detention, caning (for male students only) and suspension, depending on the seriousness of the offence committed and the frequency of its recurrence.

In the event held in 2016, the school broke the Singapore Book of Records for the largest piece of mosaic made from close to 30,000 straw hearts that are folded by students and staff.