Building a CAS project from scratch this fall is manageable if you begin with a genuine purpose, recruit collaborators, and use September for investigation rather than rushing into action. A valid IB CAS project is a collaborative series of sequential CAS experiences lasting at least one month, so a single fundraiser, performance, or volunteering day is not enough.
This guide provides a practical September-November plan and explains how to build reflection and evidence into the project.
What officially makes an activity a CAS project?
The IB defines a CAS project as collaborative, sequential, and sustained for at least one month. Every Diploma Programme student must participate in at least one project during the CAS programme.
A project may address Creativity, Activity, Service, or a combination of strands. Combining strands is not an official requirement.
| Official requirement | What it means in practice |
|---|---|
| Collaboration | You work with other students or members of the wider community. |
| Sequential experiences | The project develops through connected stages, actions, and adjustments. |
| At least one month | Planning and implementation extend across a minimum of one month. |
| One or more CAS strands | The project involves Creativity, Activity, Service, or a combination. |
| CAS stages | You use investigation, preparation, action, reflection, and demonstration. |
CAS is not formally graded, but completion depends on evidence of engagement and achievement of the seven CAS learning outcomes across your overall programme. Read the official IB CAS project guidance and confirm your school's procedures with your coordinator.
Start with a need, not an impressive title
A strong project answers three questions: Who is it for? What need or opportunity exists? What can our team realistically contribute? If your idea includes Service, consult the intended community instead of assuming what people need.
Use this idea formula:
Our team will work with [group or partner] to address [verified need or opportunity] by completing [connected actions] between [start date] and [end date].
For example, a team might work with a primary school librarian to deliver four interactive storytelling workshops during October. This identifies a partner, action, timeframe, and intended result.
Possible fall projects include:
- producing a local-history podcast series with community interviews
- running four beginner fitness sessions for younger students
- testing waste-reduction resources with the school cafeteria
- delivering art workshops with a community partner
- organizing a peer study-skills programme and revising it through feedback
Consult these IB-friendly CAS project ideas, but adapt any idea to your context.
Use the five CAS stages
The five stages are investigation, preparation, action, reflection, and demonstration. They are a framework rather than a rigid checklist, and reflection can occur whenever the project changes.
Investigation and preparation
Identify your interests, abilities, growth areas, and the need you want to address. Gather evidence through a conversation, survey, observation, or reliable research. For Service, confirm the need with the people affected.
Preparation turns the idea into a workable plan. Decide roles, dates, permissions, safeguarding requirements, resources, budget, communication methods, and contingency arrangements. Record decisions in a shared document so collaboration remains visible.
Action, reflection, and demonstration
Action includes implementation and the problem-solving required when reality differs from the plan. Reflection should influence later action, not merely describe events afterward. Demonstration communicates what happened and what you learned through your portfolio, a presentation, a final product, or another suitable format.
The official IB CAS subject brief summarizes the strands, learning outcomes, portfolio, and project expectations.
A September-November CAS project timeline
| Period | Main task | Useful evidence |
|---|---|---|
| September, weeks 1-2 | Investigate interests, needs, partners, and feasibility | Notes, survey, emails, meeting record |
| September, weeks 3-4 | Form the team, seek approval, assign roles, and plan | Proposal, calendar, role chart, risk assessment |
| October, weeks 1-2 | Begin action and gather participant feedback | Photographs, drafts, attendance, feedback |
| October, weeks 3-4 | Adjust the project and continue delivery | Revised plans, meeting notes, reflection |
| November, weeks 1-2 | Complete action and evaluate results | Final product, partner comments, outcome data |
| November, weeks 3-4 | Demonstrate learning and organize the portfolio | Presentation, selected evidence, final reflection |
Starting in September leaves time to resolve permission or scheduling problems. Protect the plan with one fixed team meeting and one action window each week. The RevisionDojo guide to managing CAS alongside IB work offers further scheduling strategies.
Connect evidence to learning outcomes
The seven outcomes address strengths and growth, challenge and new skills, initiative and planning, commitment and perseverance, collaboration, global significance, and ethical choices. You need evidence of all seven across your entire CAS programme, but one project does not need to demonstrate every outcome.
Choose two to four outcomes that arise naturally. Evidence may include proposals, calendars, drafts, photographs with appropriate consent, anonymized feedback, partner messages, and revised plans.
Evidence proves that something occurred; reflection explains what it meant. Guidance on what coordinators look for in CAS reflections can help you move beyond a chronological diary.
Reflect without creating extra work
After each significant session, record one important moment, one challenge, your response, what you learned, and your next step. A short, specific reflection is stronger than a generic paragraph claiming that you developed leadership.
For example, if few students attend a workshop, examine whether promotion reached the intended audience. Record the evidence, explain how the team changed its communication, and evaluate whether attendance improved. This connects reflection directly to planning and action.
Store evidence promptly in one shared folder, then select only relevant material for your individual portfolio. RevisionDojo's guide to strengthening CAS reflection and documentation provides practical prompts.
Common mistakes to prevent
- Beginning without coordinator approval: Schools may have local forms, safeguarding rules, or supervisor requirements.
- Treating one event as the whole project: Connected planning, action, reflection, and follow-up must last at least one month.
- Working alone: A CAS project specifically requires collaboration.
- Inventing a community need: Consult participants or an appropriate organization.
- Claiming every learning outcome: Select outcomes supported by evidence.
- Leaving documentation until November: Reconstructed reflections often omit important changes.
The difference between an experience and a project is explained in what counts as a CAS project versus a CAS experience.
Conclusion
A successful fall CAS project needs a verified purpose, genuine collaboration, at least one month of connected experiences, thoughtful use of the CAS stages, and evidence of learning. Investigate in September, act and adapt through October, then evaluate and demonstrate your learning in November.
RevisionDojo CAS resources and Jojo AI can support planning and reflection. Use them to organize your thinking while ensuring every reflection remains personal and based on work you completed.