OCR GCSE Combined Science Grade Boundaries Explained
GCSE Combined Science OCR grade boundaries explained for results day, including 2025 marks, double grades, tiers and what to check in 2026.
Results day can make one number feel like the whole story. Yet GCSE Combined Science OCR grade boundaries are not fixed targets chosen before your exams. OCR sets them after papers have been marked, adjusting the thresholds to reflect the difficulty of that particular series.
For students receiving results in 2026, the important date is Thursday 20 August 2026. The 2026 boundaries will not be confirmed until results day, so any figures circulating beforehand are estimates. The latest confirmed boundaries currently available are from June 2025.
OCR Combined Science results day checklist
Before interpreting your result, check:
- whether you studied Combined Science A: Gateway Science, code J250, or Combined Science B: Twenty First Century Science, code J260;
- whether you were entered for foundation or higher tier;
- your paired grade, such as
$6$-$6$or$5$-$4$; - the official boundary table for your examination series;
- how close your total mark was to the next boundary before considering a review of marking.
You can find specification-matched support on the OCR GCSE Combined Science revision hub.
A nervous student opens a results envelope while rumours drift away
Latest GCSE Combined Science OCR grade boundaries
The table below shows OCR's confirmed June 2025 qualification boundaries. These are useful for understanding the grading system, but they must not be treated as predictions for 2026. Both qualifications had a maximum total of 360360360 marks.
| Double grade | J250 higher | J260 higher | J250 foundation | J260 foundation |
|---|---|---|---|---|
$9$-$9$ | 280280280 | 259259259 | Not available | Not available |
$9$-$8$ | 266266266 | 244244244 | Not available | Not available |
$8$-$8$ | 252252252 | 230230230 | Not available | Not available |
$8$-$7$ | 239239239 | 216216216 | Not available | Not available |
$7$-$7$ | 226226226 | 202202202 | Not available | Not available |
$7$-$6$ | 209209209 | 186186186 | Not available | Not available |
$6$-$6$ | 192192192 | 170170170 | Not available | Not available |
$6$-$5$ | 175175175 | 154154154 | Not available | Not available |
$5$-$5$ | 158158158 | 138138138 | 212212212 | 210210210 |
$5$-$4$ | 142142142 | 122122122 | 194194194 | 195195195 |
$4$-$4$ | 126126126 | 106106106 | 176176176 | 181181181 |
$4$-$3$ | 118118118 | 989898 | 155155155 | 158158158 |
$3$-$3$ | Not available | Not available | 134134134 | 135135135 |
$3$-$2$ | Not available | Not available | 113113113 | 113113113 |
$2$-$2$ | Not available | Not available | 929292 | 919191 |
$2$-$1$ | Not available | Not available | 717171 | 696969 |
$1$-$1$ | Not available | Not available | 505050 | 474747 |
A boundary is the minimum total required for that grade. Different marks for J250 and J260 do not mean that one qualification was easier to pass. They are different specifications with different papers, and the boundaries reflect how demanding students found each assessment.
Why Combined Science gives two grades
OCR Combined Science is worth two GCSEs, so you receive a double grade rather than separate biology, chemistry and physics grades. The result represents your performance across the complete qualification.
The grades move through adjacent steps:
9-9, 9-8, 8-8, 8-7,…, 2-1, 1-19\text{-}9,\ 9\text{-}8,\ 8\text{-}8,\ 8\text{-}7,\ldots,\ 2\text{-}1,\ 1\text{-}19-9, 9-8, 8-8, 8-7,…, 2-1, 1-1That is why $7$-$6$ is possible but $7$-$5$ is not. The larger grade is always written first.
Foundation tier offers outcomes up to $5$-$5$. Higher tier offers grades up to $9$-$9$, with $4$-$3$ acting as the lower safety-net grade in the published OCR structure.
Biology, chemistry and physics carry one combined results suitcase
How OCR grade boundaries are decided
Ofqual confirms that examination boards set boundaries after exams have been taken and marking is nearly complete. Statistical evidence is considered alongside senior examiners' judgements about work around potential thresholds.
If a paper proves harder than expected, boundaries may fall. If it proves easier, they may rise. This preserves a comparable standard rather than forcing the same percentage of students into each grade. There is no predetermined quota for passes, grade 999 results or any other outcome.
Your total percentage can be calculated as:
Percentage=total marks achieved360×100\text{Percentage}=\frac{\text{total marks achieved}}{360}\times 100Percentage=360total marks achieved×100However, OCR awards the result using the raw-mark boundary, not a universal percentage rule.
What to do before and after results day
Before results day, avoid trying to reconstruct every mark from memory. A remembered answer is incomplete evidence; the marked scripts and official boundaries are what matter.
If you are still preparing for OCR assessments, use OCR Combined Science past papers under timed conditions and mark them carefully. Follow weaker areas with the OCR Combined Science revision guides, including focused support for cell structures, the particle model, wave behaviour and practical skills.
After receiving your result, speak to your school if it is unexpected or affects your next step. Staff can check component marks and discuss access to scripts, clerical re-checks or reviews of marking. A review can leave a grade unchanged, raise it or lower it, so it needs an informed decision rather than a rushed reaction.
A student climbs paired-grade steps while a robot reminds them to check the qualification
Common mistakes when reading OCR boundaries
- Using last year's table as a prediction. Boundaries change between examination series.
- Confusing J250 with J260. Gateway Science and Twenty First Century Science have separate thresholds.
- Reading a component boundary as a final grade. OCR may publish notional component boundaries, but the qualification grade comes from the overall total.
- Expecting three science grades. Combined Science produces one paired result worth two GCSEs.
- Comparing foundation and higher marks directly. The papers and available grade ranges differ.
- Assuming one mark below a boundary means the marking was wrong. A boundary describes the outcome; it is not evidence of a marking error.
Make the boundary useful, not frightening
A grade boundary is a dividing line drawn after thousands of scripts have been marked. It cannot describe every strong explanation you wrote or every difficult question you recovered from. It simply converts your overall mark into a recognised result.
Use the correct OCR table, check your qualification code and ask for guidance when the result affects your next step. Then turn attention towards what you can control. MathsGenie's free OCR Combined Science resources bring together revision lessons, practice questions, past papers, predicted papers, mini tests and mark schemes so that each revision session leads to a clearer next action.
Frequently Asked Questions
When will the 2026 OCR Combined Science grade boundaries be released?
The confirmed 2026 boundaries will be available on GCSE results day, Thursday 20 August 2026. Figures published before then are estimates rather than official thresholds.
What is the difference between OCR J250 and J260?
J250 is OCR Combined Science A: Gateway Science. J260 is Combined Science B: Twenty First Century Science. They follow different specifications and have separate grade boundaries.
Is an OCR Combined Science grade of $5$-$4$ two GCSEs?
Yes. Combined Science is a double-award qualification worth two GCSEs. A result of $5$-$4$ records one grade 555 and one grade 444.
Can OCR Combined Science grade boundaries change each year?
Yes. Boundaries are set after marking and may rise or fall to reflect the difficulty of that examination series while keeping grading standards comparable.
Can a review of marking lower my Combined Science grade?
Yes. Following a review, marks and grades can rise, remain unchanged or fall. Discuss the evidence, deadlines and possible consequences with your school before requesting one.
