Your grade journey
OCR A level Biology B (Advancing Biology)grade boundaries
Explore official boundaries. See where your marks take you.
H4223 official seriesMaximum mark 270
Exam series
Flight log / June 2026
Grade boundaries
OfficialAll papers · 01 / 02 / 03 · Out of 270
Grade A*
193
marks / 270
Grade A
173
marks / 270
Grade C
134
marks / 270
Grade E
96
marks / 270
All grade thresholds
| Grade | Minimum mark | Mark range | % of maximum |
|---|---|---|---|
| A* | 193 | 193–270 | 71% |
| A | 173 | 173–192 | 64% |
| B | 153 | 153–172 | 57% |
| C | 134 | 134–152 | 50% |
| D | 115 | 115–133 | 43% |
| E | 96 | 96–114 | 36% |
| U | Below 96 | ||
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* | A | B | C | D | E |
|---|---|---|---|---|---|---|
| June 2026 | 193+7 | 173+6 | 153+5 | 134+5 | 115+5 | 96+5 |
| June 2025 | 186+15 | 167+16 | 148+17 | 129+18 | 110+19 | 91+19 |
| June 2024 | 171 | 151 | 131 | 111 | 91 | 72 |
+ 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.
173 marks needed for Grade A.
Frequently asked questions
What did you need for a grade E in Biology B (Advancing Biology) in June 2026?
In June 2026, grade E in OCR A level Biology B (Advancing Biology) (H422) needed 96 out of 270 on all papers.
What was the boundary for a grade A* in June 2026?
193 out of 270 on all papers — the top grade for A level Biology B (Advancing Biology) 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.