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.
