The College has three Sister Schools partnerships:
- Kaohsiung Municipal Kaohsiung Girls’ Senior High School (Taiwan)
- Hangzhou Dongfang High School (China)
- Nantong Qixiu Middle School (China)
Students from Kaohsiung have visited the College since 2014, Nantong since 2017 and Hangzhou in 2019. Calamvale students have visited the sister schools in Kaohsiung and Nantong, CCC teachers have visited the school in Hangzhou. The activities undertaken by the students are educational and cultural.
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In addition, there are friendship schools in China, Korea & Japan where the College has participated in global connection projects.