[citation needed] He had been a missionary in Wuchow, Kwangsi for more than a decade, until he was forced to leave after the Chinese Communist Party came to power in 1949.

When Father Reilly came to Hong Kong, he put up a small wooden hut in Kowloon Tsai, where he served the poor in that area, including many refugees from the People's Republic of China.

In those days, the government began to focus on the provision of public services such as safe housing, medical care and education.

In 2008, the primary section moved to a new campus at 11 Hoi Lai Street, Sham Shui Po.

In 2008, two students of the school were awarded second place in the Intel International Science and Engineering Fair (ISEF) for their invention of an "anti-bump lock" that could counter bump keys.