Introduction
The IB Computer Science SL course provides students with the foundations of computational thinking, problem-solving, and programming. Success in this subject requires both theoretical knowledge and practical coding skills across multiple components.
Knowing the 2025 Computer Science SL grade boundaries (Timezone 0) helps students set clear targets for each paper and the Solution project, ensuring consistent performance toward the final grade.
Quick Start Checklist for Computer Science SL
- Review core syllabus concepts for Paper 1.
- Practice algorithm and programming problems for Paper 2.
- Work on a strong Solution project with detailed documentation.
- Learn the IB command terms (“describe,” “explain,” “evaluate”) to maximize marks.
IB Computer Science SL 2025 Grade Boundaries
Paper 1 (out of 70)
- Grade 7: 51–70
- Grade 6: 45–50
- Grade 5: 39–44
- Grade 4: 33–38
- Grade 3: 22–32
- Grade 2: 11–21
- Grade 1: 0–10
Paper 2 (out of 45)
- Grade 7: 32–45
- Grade 6: 28–31
- 25–27
