
Complete Guide to IB CAS: Reflections, Projects, Interviews
Master IB CAS reflections, projects, and interviews with this essential guide from an expert IB tutor. Learn how to meet the 7 Learning Outcomes and secure your diploma.
Your Essential Guide to IB CAS: Mastering Reflections, Projects, and Interviews
Reflections, learning outcomes, CAS Projects and interviews. These are the basics of CAS, and they confuse just about every new IB student equally. How do you write reflections? What makes a good CAS project? Why do you need to be interviewed? In this post, I will try to draw from my experience as an IB student and as a tutor to answer these questions and give a comprehensive overview of CAS so you can feel confident dealing with it. This post takes a holistic view at this IB core constituent, with the little gold nuggets of information that made my CAS career considerably more relaxed.
The Basics of the 7 Learning Outcomes
I won’t bloat this blog post (and, frankly, bore you) by listing all seven learning outcomes. You can check them out here if you want to see them all. Instead, I will walk you through a few examples of the learning outcomes and pair them with a CAS activity. Let’s take the learning outcome:
4. Show commitment to and perseverance in CAS experiences
This learning outcome lends itself to long-term CAS activities. Think of all the things people usually say they will do as a new year's resolution but cannot commit to doing for a long time and rarely persevere. By achieving this learning outcome, the IB wants you not to be the person that gives up after a week or two but to stick with it even when your motivation dwindles! A good example could be going to the gym. You will most likely start going with excitement in the early days, but you really have to push yourself to keep going after one or two months—this learning outcome pairs like wine and cheese with learning outcome:
1. Identify your own strengths and develop areas for personal growth
And hey, since we are on the topic of long-term activities, we can smoothly segue into the CAS project.
What Even is the CAS Project?
The basics of the CAS project are reasonably straightforward. It is, however, too often forgotten and left to the last minute. It is a collaborative project that lasts for a month or longer. The keyword here is collaborative. Going to the gym alone for a month or more won’t cut it. Going to the gym with a group you have organised? Well, that is the embodiment of a perfect CAS project (that, by the way, perfectly targets learning outcome 3, which focuses on planning and initiative).
You must complete at least one of these projects to pass CAS—which you must do to get your diploma, by the way! Students often mix these with learning outcomes 6 and 7—the ones that deal with actions of global significance and ethics—by joining a local volunteer group like Red Cross or Amnesty. See if there is anything like that nearby you can help and get some service hours out of! A lot of students will do more than one CAS project, too.
What activities can be CAS?
As long as it’s either a creative, active or service-oriented pursuit, virtually anything can be a CAS project. You just have to pair it up with a fitting learning outcome and demonstrate how you have achieved those learning outcomes in the reflections (we will get to those in just a second). Videogames, cat-sitting and running a YouTube channel or Instagram account are all not unheard of CAS activities. Anything where you can develop as a person and target one of the seven learning outcomes will do just fine. You just need to think about it the right way and show that you are developing in your reflections.
The Basics of Writing Reflections
The most important thing to remember when writing your reflections is to explicitly address how you achieve the learning outcome the activity is targeting. Let’s go back to our example of going to the gym and targeting learning outcome #4. You want to write how you commit to going regularly, and honestly address your struggles with that. You do not need to exaggerate the truth. Being honest about what is difficult and what you can do about it is an excellent demonstration of introspection!
The Point of CAS Interviews
The last thing I will touch on, for now, is the CAS interviews. There are three of these, and you might be wondering why? Fair question!
- The first interview is really just to check up on you. They want to see that you have understood what CAS is all about and that you are writing your reflections the way you should.
- In the second interview, you should reflect on how far you have come since you started and where you can go from here.
- In the third and final interview, you can reminisce about what you did and consider how the things you did for CAS positively affected your growth as a person. It sounds cheesy, but it can genuinely be an exciting process if you try to be a bit invested in it.
And that’s about it; a comprehensive overview of the basics you should know for CAS and a few tips and tricks. Hopefully, they are of some use to you.

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Why Lanterna?
CAS stands for Creativity, Activity, Service, and it's one of the three core components of the IB Diploma Programme. It requires students to engage in a range of experiences and a collaborative project, reflecting on their personal growth and development in relation to seven specific learning outcomes. It's a mandatory component for earning the IB Diploma.
The seven learning outcomes guide your CAS journey, focusing on areas like identifying strengths and growth areas, undertaking new challenges, planning and initiating activities, showing commitment and perseverance, working collaboratively, engaging with issues of global significance, and considering ethical implications. All your CAS activities and reflections should demonstrate progress towards these outcomes.
A good CAS Project is a collaborative, sustained endeavour lasting a month or longer, where you work with others to achieve a specific goal. It should ideally address several learning outcomes, particularly those related to planning, initiative, and collaboration. Examples include organising a charity event, leading a community clean-up, or even setting up a group fitness challenge.
Reflections are crucial for CAS. The key is to explicitly link your experiences to the CAS learning outcomes. Don't just describe what you did; explain how you grew, what challenges you faced, how you overcame them, and what you learned about yourself and the world. Honesty about struggles and insights is valued, demonstrating genuine introspection and development.
There are three mandatory CAS interviews throughout the Diploma Programme. They serve as check-ins with your CAS coordinator to ensure you understand the requirements, reflect on your progress, and ultimately consider how your CAS journey has contributed to your personal growth. They're an opportunity to discuss your experiences and ensure you're on track to complete the component successfully.
Absolutely! Lanterna's expert tutors and Student Success Experts can provide guidance on every aspect of CAS. Whether you need help brainstorming project ideas, understanding the learning outcomes, structuring your reflections, or preparing for your CAS interviews, we offer personalised support to ensure you meet all requirements and make the most of this enriching experience.
The Lanterna free IB consultation is a no-pressure, 20-30 minute chat with one of our expert IB Student Success Experts. It's designed to help you gain clarity on your IB situation, whether it's about CAS, subject choices, exam preparation, or anything else. You'll walk away with a clear, personalised plan and actionable next steps, backed by our team's extensive experience.
Yes, absolutely! The consultation is 100% free, with no hidden costs or obligation to purchase tutoring. Our goal is to provide valuable insights and a clear plan to help you succeed in the IB. It's a chance for you to get expert advice and understand your options, whether or not you choose to pursue tutoring with us.
Our Student Success Experts are highly experienced IB graduates and educators who have guided thousands of students through the Diploma Programme. They possess deep "insider" knowledge of the IB curriculum and assessment criteria. They're here to listen to your concerns, answer your questions, and help you develop a strategic approach to your studies, including navigating CAS effectively.
Our 600+ IB tutors, many of whom scored 40+ in the IB or have examiner experience, can offer tailored support. For CAS, this could mean brainstorming unique project ideas that align with your interests, guiding you on how to demonstrate specific learning outcomes, reviewing your reflection drafts for depth and clarity, or even helping you find creative ways to integrate CAS into your daily life. We ensure you meet the requirements while making CAS a meaningful experience.
It's a common challenge! Our Student Success Experts and tutors can help you identify activities that genuinely interest you and align with the CAS requirements. We can brainstorm ideas based on your passions, connect you with resources, and help you structure existing activities to count towards CAS. Our goal is to make CAS an enjoyable and impactful part of your IB journey, not a burden.
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