Your grade journey
Cambridge IGCSE Computer Sciencegrade boundaries
Explore official boundaries. See where your marks take you.
04787 official seriesMaximum mark 150
Exam series
Papers
Flight log / June 2026
Grade boundaries
OfficialPapers 11, 21 · Out of 150
Grade A*
117
marks / 150
Grade A
93
marks / 150
Grade C
46
marks / 150
Grade E
32
marks / 150
All grade thresholds
| Grade | Minimum mark | Mark range | % of maximum |
|---|---|---|---|
| A* | 117 | 117–150 | 78% |
| A | 93 | 93–116 | 62% |
| B | 69 | 69–92 | 46% |
| C | 46 | 46–68 | 31% |
| D | 39 | 39–45 | 26% |
| E | 32 | 32–38 | 21% |
| F | 25 | 25–31 | 17% |
| G | 18 | 18–24 | 12% |
| U | Below 18 | ||
These boundaries apply to this exam series and route.
How these boundaries have changed
Papers 11, 21, every official series. Boundaries move each year with how hard the papers were.
| Series | A* | A | B | C | D | E | F | G |
|---|---|---|---|---|---|---|---|---|
| June 2026 | 117+1 | 93-1 | 69-3 | 46-4 | 39-3 | 32-3 | 25-3 | 18-3 |
| November 2025 | 104-3 | 84-4 | 64-5 | 45-6 | 37-5 | 29-4 | 22-2 | 15 |
| June 2025 | 116+9 | 94+10 | 72+11 | 50+12 | 42+10 | 35+9 | 28+7 | 21+5 |
| November 2024 | 107 | 88 | 69 | 51 | 42 | 33 | 24 | 15 |
| June 2024 | 107 | 84 | 61 | 38 | 32 | 26 | 21 | 16 |
+ higher than the same series a year earlier (harder to reach) · − lower (easier to reach).
Grade calculator
June 2026 · Papers 11, 21
Enter your mark for each paper to see your grade.
93 marks needed for Grade A.
Frequently asked questions
What did you need for a grade E in Computer Science in June 2026?
In June 2026, grade E in Cambridge IGCSE Computer Science (0478) needed 32 out of 150 on papers 11, 21; 29 out of 150 on papers 12, 22; 30 out of 150 on papers 13, 23.
What was the boundary for a grade A* in June 2026?
117 out of 150 on papers 11, 21; 120 out of 150 on papers 12, 22; 115 out of 150 on papers 13, 23 — the top grade for IGCSE Computer Science in June 2026.
How is my grade worked out?
Your marks from each paper are added up (scaled by a weighting factor where papers count differently) to give your subject mark, which is then compared with the boundaries. Your grade comes from the total — not from each paper separately.
When will the next boundaries be published?
Cambridge publishes grade boundaries on results day for each series. Until then, any figures shown for a future series are Starley estimates, clearly labelled, based on recent years.