International Liaison
- High School attached to Tsinghua University, Beijing, China - sister school
- Shanghai High School, Shanghai, China - sister school
- Nankai High School, Tianjin, China - sister school
- Presbyterian Ladies' College, Sydney, New South Wales, Australia - sister school
- St Andrew's Cathedral School, Sydney, New South Wales, Australia - sister school
- St Joseph's Institution, Singapore, - sister school
- CHIJ Secondary (Toa Payoh), Singapore - sister school
- St. George's School (Vancouver), Vancouver, British Columbia, Canada - sister school
- Deerfield Academy, Deerfield, Massachusetts, USA - sister school
- One of the five member schools for the Student Science Conference Platform, including Hwa Chong Institution, Singapore; Nankai High School, Tianjin, China, Stella Matutina Girls’High School Taichung, Taiwan; The Hutchins School, Tasmania, Australia; St. Paul's Co-educational College, Hong Kong, China
Read more about this topic: St. Paul's Co-educational College