GCSE Biology Marks per Grade: Results Day Guide
GCSE biology marks per grade explained with the latest raw mark thresholds for AQA, Edexcel and OCR, plus clear guidance for results day.
Results day can turn a small number into a large question: was it enough? If you are checking GCSE biology marks per grade, the key fact is simple: your exam board adds your eligible paper marks together, then compares that total with the grade thresholds for your tier and exam series.
The latest confirmed summer boundaries available before the summer 202620262026 results are from June 202520252025. They show historical thresholds, not guaranteed targets for a future paper. Boundaries can change because papers vary in difficulty.
Use this quick checklist before reading the table:
- Confirm whether you took separate Biology or Combined Science.
- Check your exam board and specification.
- Select foundation or higher tier where applicable.
- Add the correct paper marks.
- Use the boundary from your actual exam series.
A student comparing raw marks with a final grade on results day
GCSE biology marks per grade in June 202520252025
The table gives the minimum overall raw mark for each grade in the June 202520252025 series. It covers AQA Biology, Pearson Edexcel Biology and OCR Biology A (Gateway Science). A dash means that grade is not available on that tier.
| Exam board and tier | Maximum | Grade 999 | Grade 888 | Grade 777 | Grade 666 | Grade 555 | Grade 444 | Grade 333 | Grade 222 | Grade 111 |
|---|---|---|---|---|---|---|---|---|---|---|
| AQA foundation | 200200200 | -- | -- | -- | -- | 140140140 | 121121121 | 878787 | 535353 | 191919 |
| AQA higher | 200200200 | 141141141 | 127127127 | 113113113 | 949494 | 757575 | 565656 | 464646 | -- | -- |
| Edexcel foundation | 200200200 | -- | -- | -- | -- | 130130130 | 111111111 | 818181 | 515151 | 222222 |
| Edexcel higher | 200200200 | 167167167 | 155155155 | 144144144 | 124124124 | 104104104 | 848484 | 747474 | -- | -- |
| OCR Biology A foundation | 180180180 | -- | -- | -- | -- | 109109109 | 909090 | 666666 | 424242 | 181818 |
| OCR Biology A higher | 180180180 | 139139139 | 128128128 | 117117117 | 100100100 | 838383 | 666666 | 575757 | -- | -- |
These figures match the published June 202520252025 exam-board boundaries. You can explore the full GCSE grade boundaries collection, see the AQA GCSE grade boundaries, or check the dedicated Edexcel GCSE Biology grade boundaries.
OCR also offers Biology B (Twenty First Century Science), which has different thresholds. Students following that specification should use the relevant listing within the OCR GCSE grade boundaries for 202520252025.
What are GCSE biology raw marks?
A raw mark is the mark awarded for your answers before it is translated into a grade. If a qualification has two papers, the overall subject result normally comes from the combined marks rather than a separate official grade for each paper.
Exam boards may publish notional component boundaries for individual papers. These can help you review performance, but they are guides rather than separate awarded grades. Your certificate records the overall qualification grade.
This distinction matters. A difficult first paper does not decide the result by itself. Marks recovered on the next paper still contribute to the same total.
Students taking AQA can enter both scores into the AQA GCSE Biology predicted grade calculator. Treat the result as an estimate whenever the boundaries for your own exam series have not yet been published.
Why GCSE biology grade thresholds change
Grade boundaries are not fixed percentages chosen before everyone sits the examination. Exam boards set them after marking, using evidence about the demand of the papers and student performance. The purpose is to keep the standard represented by a grade reasonably consistent when one series is harder or easier than another.
That is why last year’s grade 777 threshold is useful as a reference, but unreliable as a promise. A sensible revision target includes a margin above the previous boundary rather than aiming for the exact minimum.
A student unsuccessfully trying to move a grade boundary before marking
Separate Biology is not Combined Science
Do not use this table if your qualification is Combined Science. Combined Science combines performance across biology, chemistry and physics and awards paired grades such as 777-777 or 555-444. Its maximum marks and boundaries are different.
You can compare the distinction using the AQA Combined Science grade boundaries. Your statement of entry, school timetable or paper code should confirm which qualification you took.
Common mistakes when checking a Biology grade
- Using the wrong year: boundaries belong to a specific exam series.
- Mixing tiers: foundation and higher papers have different thresholds and available grades.
- Checking Combined Science: separate Biology boundaries cannot predict a Combined Science grade.
- Using one paper alone: the awarded grade is based on the overall qualification total.
- Treating a prediction as official: future boundaries remain unknown until the exam board publishes them.
- Comparing percentages across boards: maximum marks and paper demand differ, so compare raw marks only within the correct specification.
Turn the boundary into a useful revision target
A boundary tells you where a grade began in a past series. Your marked papers tell you what to do next. Record every lost mark by topic, revisit the weakest areas and then test them again under timed conditions.
MathsGenie students can apply the same disciplined process through the free GCSE Maths revision hub: revision lessons first, practice questions second, then mini tests, past papers and predicted papers with mark schemes and video solutions. The revision planner helps turn that process into a manageable routine.
On results day, check the board, tier, qualification and year before drawing conclusions. For the complete historical figures and the clearest final check, visit MathsGenie’s Edexcel GCSE Biology grade boundaries post. One raw mark is information. Used carefully, it becomes direction.
Frequently Asked Questions
How many raw marks were needed for a grade 9 in GCSE Biology in 2025?
In June 202520252025, the higher-tier grade 999 boundary was 141141141 out of 200200200 for AQA, 167167167 out of 200200200 for Edexcel and 139139139 out of 180180180 for OCR Biology A.
Can I calculate my GCSE Biology grade from one paper?
Not reliably. The awarded grade is based on the overall qualification total. Individual-paper boundaries are generally notional guides rather than separate official grades.
Are GCSE Biology grade boundaries the same every year?
No. Exam boards set boundaries for each exam series after marking, so thresholds can move according to the demand of the papers and evidence of student performance.
What is the highest grade available on foundation Biology?
For the tiered AQA, Edexcel and OCR GCSE Biology qualifications shown here, the highest foundation-tier grade is grade 555.
Can I use Biology boundaries for Combined Science?
No. Combined Science includes biology, chemistry and physics and awards paired grades. Use the boundaries for your exact Combined Science specification and tier.
