Your grade journey
Edexcel International GCSE Chemistry (Modular)grade boundaries
Explore official boundaries. See where your marks take you.
4XCH12 official seriesMaximum mark 240 UMS
Exam series
Papers
Flight log / June 2026
Grade boundaries
OfficialUnits 1 and 2 · Out of 240 UMS
Grade 9
216
UMS / 240
Grade 7
168
UMS / 240
Grade 5
120
UMS / 240
Grade 4
96
UMS / 240
All grade thresholds
| Grade | Minimum UMS | Mark range | % of maximum |
|---|---|---|---|
| 9 | 216 | 216–240 | 90% |
| 8 | 192 | 192–215 | 80% |
| 7 | 168 | 168–191 | 70% |
| 6 | 144 | 144–167 | 60% |
| 5 | 120 | 120–143 | 50% |
| 4 | 96 | 96–119 | 40% |
| 3 | 72 | 72–95 | 30% |
| 2 | 48 | 48–71 | 20% |
| 1 | 24 | 24–47 | 10% |
| U | Below 24 | ||
These boundaries apply to this exam series and route.
How these boundaries have changed
Units 1 and 2, every official series. Boundaries move each year with how hard the papers were.
| Series | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 |
|---|---|---|---|---|---|---|---|---|---|
| June 2026 | 216 | 192 | 168 | 144 | 120 | 96 | 72 | 48 | 24 |
| June 2025 | 216 | 192 | 168 | 144 | 120 | 96 | 72 | 48 | 24 |
+ higher than the same series a year earlier (harder to reach) · − lower (easier to reach).
Grade calculator
June 2026 · Units 1 and 2
Enter your raw mark for each unit to see your grade.
168 UMS needed for Grade 7.
Frequently asked questions
What did you need for a grade 4 in Chemistry (Modular) in June 2026?
In June 2026, grade 4 in Pearson Edexcel International GCSE Chemistry (Modular) (4XCH1) needed 96 out of 240 on units 1 and 2; 96 out of 240 on units 1r and 2r.
What was the boundary for a grade 9 in June 2026?
216 out of 240 on units 1 and 2; 216 out of 240 on units 1r and 2r — the top grade for International GCSE Chemistry (Modular) in June 2026.
How is my grade worked out?
Each unit's raw mark is converted to a uniform mark (UMS); your grade comes from your UMS total against the cash-in boundaries. The calculator shows each conversion.
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.