All CJCians are strongly encouraged to have one school-based CCA. CCA is an important platform to build positive relationships, learn important life skills and build a sense of community and belonging in the college.

An exception is made for students who participate at the National level in a CCA not offered by the school.

For such students, their primary CCA would be external

but they would normally opt for one of the 2nd CCAs offered by the school in order to participate in the school's CCA system and benefit from its character and leadership development programme.