The CAS Stages (DP IB Creativity, Activity, Service): Revision Note
What are the CAS stages and how do they guide CAS?
The five stages of CAS
The CAS stages are five steps consisting of investigation, preparation, action, reflection and demonstration—provide a supportive structure for the CAS programme
Investigation—the initial stage where students identify their interests, skills and talents to determine the purpose of a CAS experience
In the context of Service, students use this stage to identify an authentic need they want to address
Preparation—the stage where students clarify roles and responsibilities, develop an action plan and identify needed resources or timelines
Students may also use this time to acquire specific skills required for the experience
Action—the stage where students implement their idea or plan through individual or collaborative effort
This often requires students to engage in decision-making and problem-solving
Reflection—the ongoing process of describing what happened, expressing feelings and generating new ideas or questions
This occurs intermittently to help students learn from the experience and make connections to personal growth
Demonstration—the final stage where students make explicit what and how they have learned and what they have accomplished
Students may share their journey through their CAS portfolio—a collection of evidence and reflections—or through informal and formal presentations
The stages as a method for doing CAS
The stages should be viewed as the actual method for "doing" CAS rather than just a tool for planning
They provide a reliable yet flexible structure that helps students move from conceiving an idea to executing a plan
For a CAS project—a collaborative series of sequential experiences lasting at least one month—following all five stages is essential
For singular CAS experiences—specific events where a student engages with one or more strands—students may not evidence every stage
Students might start a singular experience at the investigation, preparation or action stage
For ongoing experiences, it is advised to always begin with investigation
How do the CAS stages support student learning?
Enhancing personal development
The framework encourages students to increase their self-awareness and learn about their own learning processes
It supports students in exploring new and unfamiliar challenges while employing different learning styles
Following these stages allows students to develop their ability to communicate and collaborate effectively with others
The process helps students develop the attributes of the IB learner profile—ten qualities valued by IB World Schools to help students become responsible community members
Ensuring purposeful engagement
The stages ensure that CAS is a student-led journey of discovery rather than a simple "tick-box" checklist of tasks
They help students clarify the purpose of their actions and consider the ethical implications of their choices
By using this framework, students can identify clear learning goals and provide better evidence of their growth
The stages provide a process and sequence that students can apply with confidence to future situations beyond the Diploma Programme
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