CAIS is an independent, non-profit, K-12 Christian international school that is owned and operated by the Kowloon Tong Church of the Chinese Christian and Missionary Alliance (KTAC) in Hong Kong. It is one of fifteen schools run by the KTAC in Hong Kong which collectively provide schooling for more than 11,000 students.

CAIS began operation in September 1992 with an enrolment of 40 students from grade 7 to grade 11. Grade 12 was introduced the following year and the enrolment increased to nearly 90 students. Grades 1 to 6 joined the school in 1995 and, in 1996, a kindergarten was added. CAIS presently accommodates an enrolment of around 600 students from more than 20 different countries and is represented by a diverse mix of cultural, ethnic, and religious backgrounds.

In July 2009, the Government of Hong Kong awarded CAIS a land grant for the construction of a 1600 student school in Lai Chi Kok. The new school will be developed in several stages beginning in 2011 and should be fully operational by August 2014.

Since Kowloon City Campus is operating at capacity enrolment, a second campus at Shek Kip Mei is open effective August 2010. Students in grades 1 through 3 will occupy the temporary premises until the new school is completed