Your grade journey
Edexcel International GCSE Mathematics Bgrade boundaries
Explore official boundaries. See where your marks take you.
4MB12 official seriesMaximum mark 300
Exam series
Papers
Flight log / June 2026
Grade boundaries
OfficialPapers 01 02 · Out of 300
Grade 9
246
marks / 300
Grade 7
173
marks / 300
Grade 5
112
marks / 300
Grade 4
82
marks / 300
All grade thresholds
| Grade | Minimum mark | Mark range | % of maximum |
|---|---|---|---|
| 9 | 246 | 246–300 | 82% |
| 8 | 209 | 209–245 | 70% |
| 7 | 173 | 173–208 | 58% |
| 6 | 142 | 142–172 | 47% |
| 5 | 112 | 112–141 | 37% |
| 4 | 82 | 82–111 | 27% |
| 3 | 67 | 67–81 | 22% |
| U | Below 67 | ||
These boundaries apply to this exam series and route. Paper maximums ↗
How these boundaries have changed
Papers 01 02, every official series. Boundaries move each year with how hard the papers were.
| Series | 9 | 8 | 7 | 6 | 5 | 4 | 3 |
|---|---|---|---|---|---|---|---|
| June 2026 | 246-9 | 209-7 | 173-5 | 142-1 | 112+4 | 82+8 | 67+10 |
| June 2025 | 255 | 216 | 178 | 143 | 108 | 74 | 57 |
+ higher than the same series a year earlier (harder to reach) · − lower (easier to reach).
Grade calculator
June 2026 · Papers 01 02
Enter your total mark to see your grade.
173 marks needed for Grade 7.
Paper-by-paper entry isn’t available here: this subject's papers are weighted and the board doesn't publish the weighting factors in its boundary documents. Use your total subject mark from your results slip.
Frequently asked questions
What did you need for a grade 4 in Mathematics B in June 2026?
In June 2026, grade 4 in Pearson Edexcel International GCSE Mathematics B (4MB1) needed 82 out of 300 on papers 01 02; 94 out of 300 on papers 01r 02r.
What was the boundary for a grade 9 in June 2026?
246 out of 300 on papers 01 02; 262 out of 300 on papers 01r 02r — the top grade for International GCSE Mathematics B 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?
Pearson Edexcel 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.