IB CAS (Creativity, Activity, Service): Explained for Students and Parents
What is CAS?
CAS stands for Creativity, Activity, Service. It is a core requirement of the IB Diploma—a programme of experiences outside the classroom that develops students as whole people.
The three strands
| Strand | Focus | Examples |
|---|---|---|
| Creativity | Arts and creative thinking | Music, theatre, design, writing |
| Activity | Physical exertion | Sport, dance, outdoor pursuits |
| Service | Community and others | Volunteering, tutoring, charity work |
Students must show engagement in all three strands.
Hours and commitment
- Minimum 150 hours in total across the two years
- Balance across C, A and S (no fixed split, but all three must be meaningful)
- CAS project—at least one collaborative project (typically a few weeks)
- Ongoing reflection—not just logging hours
Seven learning outcomes
Students must show evidence of achieving the seven CAS learning outcomes through their experiences and reflections:
- Identify own strengths and areas for growth
- Demonstrate challenges have been undertaken
- Demonstrate how to initiate and plan a CAS experience
- Show commitment and perseverance
- Demonstrate collaboration
- Demonstrate engagement with issues of global significance
- Consider the ethics of choices and actions
Reflection
Reflection is central—students think about what they learned, how they grew, and how CAS connects to their life and studies. This is documented in a CAS portfolio or journal.
CAS and the diploma
CAS is not graded but must be completed satisfactorily to receive the diploma. The school CAS coordinator decides completion.
Common questions
Can paid work count? Usually not for Service; sometimes for Creativity or Activity if it meets CAS principles.
Can I use activities I already do? Yes, if they are sustained, meaningful and meet the learning outcomes.
How Tutopiya helps
Tutopiya supports IB students with subject and core guidance. Explore IB resources or book a free trial.
Source: IB CAS
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