[2] ACS was founded and established on 10 March 1893, and officially opened by Sir William Hood Treacher.

In 1892, the Klang District Officer, Walter W Skeat and Loke Yew encountered obstacles when raising money for a school building.

[citation needed] They were finally successful in renting the premises of Penghulu Mohid's house in Jalan Rembau to start the new school.

During the same year, the first Klang Boys' Brigade was founded with the assistance of Captain Peter Dawson and Reverend Ronald Buttler-White.

In 1958, Additional Mathematics, and Pure Sciences, which encompasses Physics, Chemistry, and Biology, were introduced to Form 4 (16-year-old) students.

In 1973, the Parent-Teacher Association (Malay: Persatuan Ibu Bapa dan Guru; PIBG) was founded in the school hall.

Ten years later, a celebration was held to commemorate ACS's 100th anniversary in both primary and secondary schools.

In 2007, ACS Secondary underwent a major refurbishment, including the exterior of the school, along with the classrooms and the corridors being repainted, and the toilet renovated.

In your classrooms and playing fields, Our beloved teachers all, Great truths of life and love they taught Thro' the years we may recall, Our hearts are filled with gratitude, For care and loving nurture, God grant us strength to serve mankind, And our nation forever.

Repeat chorus The crest of both the primary and secondary school bares a resemblance, with the motto being the only difference.

As such, they are divided into 5 different colour-based team, commonly called as "colour house" to compete with each other during the yearly sports day and cross country run.

Among the options available are basketball, football, volleyball, badminton, taekwondo, swimming, dodgeball, ping-pong, rugby, tennis, and hockey.

In addition to participating in these sport, students are also allowed to compete among each other and among various schools within the district, state, and national level.