Your grade journey
Edexcel International GCSE Science (Single Award)grade boundaries
Explore official boundaries. See where your marks take you.
4SS02 official seriesMaximum mark 180
Exam series
Flight log / June 2026
Grade boundaries
OfficialAll papers · 1B / 1C / 1P · Out of 180
Grade 9
161
marks / 180
Grade 7
130
marks / 180
Grade 5
100
marks / 180
Grade 4
86
marks / 180
All grade thresholds
| Grade | Minimum mark | Mark range | % of maximum |
|---|---|---|---|
| 9 | 161 | 161–180 | 89% |
| 8 | 145 | 145–160 | 81% |
| 7 | 130 | 130–144 | 72% |
| 6 | 115 | 115–129 | 64% |
| 5 | 100 | 100–114 | 56% |
| 4 | 86 | 86–99 | 48% |
| 3 | 70 | 70–85 | 39% |
| 2 | 54 | 54–69 | 30% |
| 1 | 38 | 38–53 | 21% |
| U | Below 38 | ||
These boundaries apply to this exam series and route. Paper maximums ↗
How these boundaries have changed
All papers, 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 | 161+5 | 145+4 | 130+3 | 115+1 | 100-1 | 86-2 | 70-4 | 54-6 | 38-9 |
| June 2025 | 156 | 141 | 127 | 114 | 101 | 88 | 74 | 60 | 47 |
+ higher than the same series a year earlier (harder to reach) · − lower (easier to reach).
Grade calculator
June 2026 · All papers
Enter your mark for each paper to see your grade.
130 marks needed for Grade 7.
Frequently asked questions
What did you need for a grade 4 in Science (Single Award) in June 2026?
In June 2026, grade 4 in Pearson Edexcel International GCSE Science (Single Award) (4SS0) needed 86 out of 180 on all papers.
What was the boundary for a grade 9 in June 2026?
161 out of 180 on all papers — the top grade for International GCSE Science (Single Award) 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.