Your grade journey
OCR AS Chemistry B (Salters)grade boundaries
Explore official boundaries. See where your marks take you.
H0333 official seriesMaximum mark 140
Exam series
Flight log / June 2026
Grade boundaries
OfficialAll papers · 01 / 02 · Out of 140
Grade A
101
marks / 140
Grade C
72
marks / 140
Grade E
44
marks / 140
All grade thresholds
| Grade | Minimum mark | Mark range | % of maximum |
|---|---|---|---|
| A | 101 | 101–140 | 72% |
| B | 86 | 86–100 | 61% |
| C | 72 | 72–85 | 51% |
| D | 58 | 58–71 | 41% |
| E | 44 | 44–57 | 31% |
| U | Below 44 | ||
These boundaries apply to this exam series and route.
How these boundaries have changed
All papers, every official series. Boundaries move each year with how hard the papers were.
| Series | A | B | C | D | E |
|---|---|---|---|---|---|
| June 2026 | 101+7 | 86+7 | 72+7 | 58+7 | 44+7 |
| June 2025 | 94+1 | 79 | 65 | 51 | 37-1 |
| June 2024 | 93 | 79 | 65 | 51 | 38 |
+ 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.
101 marks needed for Grade A.
Frequently asked questions
What did you need for a grade E in Chemistry B (Salters) in June 2026?
In June 2026, grade E in OCR AS Chemistry B (Salters) (H033) needed 44 out of 140 on all papers.
What was the boundary for a grade A in June 2026?
101 out of 140 on all papers — the top grade for AS Chemistry B (Salters) 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?
OCR 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.