Introduction
The IB Computer Science 2025 syllabus brings some of the biggest changes in recent years. From updated assessment structures to new content areas like machine learning and data ethics, the course is evolving to match modern computing. If you’re sitting exams from 2025 onward, it’s essential to understand what’s different so you can prepare effectively.
In this article, we’ll break down the major syllabus updates, explain what they mean for your revision, and show how RevisionDojo’s resources are already adapted to help you succeed.
Quick Start Checklist
Here’s what’s new in IB Computer Science 2025:
- ✅ Paper 3 has been removed — HL students are now assessed only in Papers 1 and 2.
- ✅ Machine learning and AI ethics have been added.
- ✅ Paper 1 includes a case study for both SL and HL.
- ✅ Paper 2 now tests computational thinking in language-specific tracks (Java or Python).
- ✅ More emphasis on real-world applications and impacts of computing.
Major Changes in Detail
1. Assessment Restructuring
- HL students no longer sit Paper 3. Instead, both Paper 1 and Paper 2 are worth 40% each.
- SL Paper 1 and Paper 2 remain, but Paper 1 now includes a case study component.
- The IA still counts for 20–30% depending on SL or HL.
2. Machine Learning & Emerging Tech
- Students must understand the basics of machine learning, including training data, bias, and algorithmic decision-making.
- Ethical considerations of AI and automation are now emphasized.
3. Databases & Data Management
- Stronger focus on data privacy, security, and ethical handling of information.
- ER diagrams, normalization, and SQL queries remain core skills.
4. Case Studies for Paper 1
- Similar to past Paper 3, but now integrated into Paper 1.
- Case studies will test technical understanding and broader impacts (social, economic, ethical).
5. Computational Thinking in Paper 2
- Students must demonstrate algorithmic reasoning, pseudocode fluency, and problem-solving.
- Java and Python tracks remain available, allowing schools flexibility.
Why These Changes Matter
- More holistic assessment – Exams now balance technical knowledge with real-world implications.
- Future-focused skills – Topics like machine learning and ethics reflect what universities and industries expect.
- Streamlined exam structure – Removing Paper 3 makes the course more manageable but also raises expectations in Papers 1 and 2.
Common Student Questions About the New Syllabus
Q: Does this mean HL is easier now without Paper 3?
Not exactly. While there’s one fewer exam, HL Paper 1 and Paper 2 are more demanding and cover broader ground.
Q: How advanced is the machine learning content?
You don’t need to build AI models. The IB wants you to understand basic principles and ethical implications, not advanced math.
Q: Do I need to switch from Java to Python?
No. Both are still accepted. Choose whichever your school teaches — the exams will accommodate both.
How RevisionDojo Prepares You for 2025
RevisionDojo has already updated its Computer Science resources to align with the 2025 syllabus:
- Machine learning notes simplified for IB-level understanding.
- Case study packs for Paper 1 with model answers.
- Algorithm and pseudocode practice tailored to Java and Python.
- IA templates updated for the new rubric expectations.
With Dojo, you’ll always be aligned with the latest IB requirements.
Conclusion
The IB Computer Science 2025 syllabus introduces new content and shifts assessment weightings, but the core remains the same: understanding algorithms, systems, databases, and ethical computing. By mastering these changes early, you’ll be better prepared for both your exams and your IA.
With RevisionDojo’s updated resources, you can approach the new syllabus confidently and aim for a 7.
