CAS is at the heart of the Diploma Programme. CAS is organized around the three strands of creativity, activity and service defined as follows :
Creativity—exploring and extending ideas leading to an original or interpretive product or performance
Activity—physical exertion contributing to a healthy lifestyle
Service—collaborative and reciprocal engagement with the community in response to an authentic need
CAS enables students to demonstrate attributes of the IB learner profile in real and practical ways, to grow as unique individuals and to recognize their role in relation to others. Students develop skills, attitudes and dispositions through a variety of individual and group experiences that provide students with opportunities to explore their interests and express their passions, personalities and perspectives.
CAS complements a challenging academic programme in a holistic way, providing opportunities for self-determination, collaboration, accomplishment and enjoyment. CAS enables students to enhance their personal and interpersonal development.
A meaningful CAS programme is a journey of discovery of self and others. For many, CAS is profound and life-changing. Each individual student has a different starting point and different needs and goals. A CAS programme is, therefore, individualized according to student interests, skills, values and background.
From the International Baccalaureate's 2017 publication "Creativity, Action, and Service Guide".