Your grade journey
Edexcel GCSE Combined Sciencegrade boundaries
Explore official boundaries. See where your marks take you.
1SC03 official seriesMaximum mark 360
Exam series
Tier / route
Flight log / June 2026
Grade boundaries
OfficialHigher tier · 1BH / 1CH / 1PH / 2BH / 2CH / 2PH · Out of 360
Grade 9–9
282
marks / 360
Grade 7–7
221
marks / 360
Grade 5–5
145
marks / 360
Grade 4–4
108
marks / 360
All grade thresholds
| Grade | Minimum mark | Mark range | % of maximum |
|---|---|---|---|
| 9–9 | 282 | 282–360 | 78% |
| 9–8 | 266 | 266–281 | 74% |
| 8–8 | 251 | 251–265 | 70% |
| 8–7 | 236 | 236–250 | 66% |
| 7–7 | 221 | 221–235 | 61% |
| 7–6 | 202 | 202–220 | 56% |
| 6–6 | 183 | 183–201 | 51% |
| 6–5 | 164 | 164–182 | 46% |
| 5–5 | 145 | 145–163 | 40% |
| 5–4 | 126 | 126–144 | 35% |
| 4–4 | 108 | 108–125 | 30% |
| 4–3 | 99 | 99–107 | 28% |
| U | Below 99 | ||
These boundaries apply to this exam series and route. Paper maximums ↗
How these boundaries have changed
Higher tier, every official series. Boundaries move each year with how hard the papers were.
| Series | 9–9 | 9–8 | 8–8 | 8–7 | 7–7 | 7–6 | 6–6 | 6–5 | 5–5 | 5–4 | 4–4 | 4–3 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| June 2026 | 282-2 | 266-3 | 251-4 | 236-5 | 221-6 | 202-5 | 183-4 | 164-3 | 145-2 | 126-1 | 108+1 | 99+2 |
| June 2025 | 284+12 | 269+13 | 255+15 | 241+16 | 227+17 | 207+17 | 187+17 | 167+16 | 147+15 | 127+14 | 107+13 | 97+13 |
| June 2024 | 272 | 256 | 240 | 225 | 210 | 190 | 170 | 151 | 132 | 113 | 94 | 84 |
+ higher than the same series a year earlier (harder to reach) · − lower (easier to reach).
Grade calculator
June 2026 · Higher tier
Enter your mark for each paper to see your grade.
266 marks needed for Grade 9–8.
Frequently asked questions
What did you need for a grade 4–4 in Combined Science in June 2026?
In June 2026, grade 4–4 in Pearson Edexcel GCSE Combined Science (1SC0) needed 194 out of 360 on foundation tier; 108 out of 360 on higher tier.
What was the boundary for a grade 9–9 in June 2026?
282 out of 360 on higher tier — the top grade for GCSE Combined 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?
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.