OCR A-level Biology A H420
OCR H420 grade boundaries
Select the qualification and exam series, then enter the total raw mark across all papers.
June 2026 Biology boundaries are live.
AQA and OCR have now published 2026 qualification boundaries for A-level, AS and GCSE Biology.
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OCR H420 · June 2026
Enter your total mark
Add the raw marks from every paper in the qualification.
—of available marks
Boundary table
OCR H420, June 2026
A*204 marks75.6%
A176 marks65.2%
B150 marks55.6%
C124 marks45.9%
D98 marks36.3%
E72 marks26.7%
Overall qualification boundaries. June 2026 is confirmed by OCR. The Practical Endorsement does not contribute to the 270-mark total.
Series comparison
Boundary by series
View chart values as a table
| Exam series | Raw mark | Percentage |
|---|---|---|
| June 2017 | 179 | 66.3% |
| June 2018 | 187 | 69.3% |
| June 2022 | 184 | 68.1% |
| June 2023 | 183 | 67.8% |
| June 2024 | 187 | 69.3% |
| June 2025 | 187 | 69.3% |
| June 2026 | 204 | 75.6% |
Use the qualification total
Component boundaries are often described as notional boundaries. They do not award a separate grade for an individual paper.