Real grade thresholds from five named sixth forms and colleges, quoted from their own published course pages, not a guess from a forum thread.
Book a Free ConsultationGCSE Combined Science is a double-award qualification that most UK sixth forms and colleges accept as an entry route into A-level Biology, Chemistry and Physics — but the minimum grade demanded is set institution by institution. Peter Symonds College in Winchester asks for 6-6 in Combined Science for A-level Biology; Hills Road Sixth Form College in Cambridge asks for 7-7 in the same subject. Both are published requirements, checked in August 2026.
Every one of the five results ranking for this question when this page was checked was a forum thread, a single school's generic FAQ answer, or an AI-generated summary — none named a second institution, and none quoted a published grade threshold with a source. The table below does that directly: five named sixth forms and colleges, their own stated Combined Science requirement for each of the three separate sciences, checked against their own current course pages.
| Institution | Type | Biology | Chemistry | Physics |
|---|---|---|---|---|
| Peter Symonds College, Winchester | Non-selective sixth-form college | GCSE grades 6, 6 and 5 (any order) across Combined Science and Maths | GCSE grades 7, 6 and 6 (any order) across Combined Science and Maths | GCSE grades 7, 6 and 6 (any order) across Combined Science and Maths |
| Hills Road Sixth Form College, Cambridge | Selective sixth-form college | Combined Science 7-7, Maths grade 6 | Combined Science 7-7, Maths grade 7 | Combined Science 7-7, Maths grade 7 |
| Sydenham & Forest Hill 6th Form, South London | State comprehensive consortium sixth form | Combined Science grade 6, Maths grade 6 | Combined Science grade 6, Maths grade 7 | Combined Science grade 6, Maths grade 7 |
| Blackpool Sixth Form College, Lancashire | Non-selective FE college | Combined Science 6 and 5 (higher tier), Maths grade 5 | Combined Science 6 and 5 (higher tier), Maths grade 5 | Combined Science 6 and 5 (higher tier), Maths grade 6 preferred |
| Barton Peveril College, Eastleigh | Non-selective FE college | Combined Science grade 6, Maths grade 6, English grade 5, average GCSE score 5.5 | Combined Science grade 6, Maths grade 6, English grade 5, average GCSE score 5.5 | Combined Science grade 6, Maths grade 6, English grade 5, average GCSE score 5.5 |
Checked directly against each institution's own published A-level course pages in August 2026. Peter Symonds College's published wording allows its three GCSE grades — two Combined Science grades plus Maths — to be met in any order, which is a genuinely different mechanism from the other four institutions, each of which fixes a separate Combined Science threshold and a separate Maths threshold.
The same college can set a lower bar for one science than another, and the reason is rarely stated but easy to see once the figures are placed side by side. At Peter Symonds College, Biology asks for GCSE grades 6, 6 and 5 across Combined Science and Maths; Chemistry and Physics both ask for 7, 6 and 6 — a full grade higher across the set. Hills Road Sixth Form College shows the same pattern at a higher level: Biology needs Combined Science 7-7 with Maths grade 6, while Chemistry and Physics need the same 7-7 in Combined Science but Maths grade 7, one grade above Biology's Maths requirement.
Neither college publishes a reason, but the shape of the difference is consistent across both: Chemistry and Physics are graded together, above Biology, at both a non-selective college and a selective one. A student who has met a college's published Biology threshold has not automatically met its Chemistry or Physics threshold, even at the same institution.
Among the five institutions checked for this page, one is explicitly selective and four are not, and the gap between them is measurable rather than assumed. Hills Road Sixth Form College, a selective sixth-form college, asks for 7-7 in Combined Science for Biology, Chemistry and Physics alike. The four non-selective institutions surveyed — Peter Symonds College, the Sydenham & Forest Hill 6th Form, Blackpool Sixth Form College and Barton Peveril College — ask for a single grade 6, or a 6 and a 5, depending on the subject and the college.
That is a full grade or more of difference on the Combined Science side, and it resolves exactly the contradiction that sits unanswered in the Mumsnet thread ranking for this query, where one parent guessed a college needed "the magic 6" and another guessed a child would "probably need to get 8,8". Both guesses were plausible because both grades exist — just at different colleges. Five institutions is not a claim about every sixth form in the country, but it is enough to show that the answer depends on how competitive the specific college is, not on a single national figure.
These five named colleges and sixth forms are not a complete national picture, and a result that falls short at one of them may not fall short everywhere — a student's own shortlisted college is the only source that actually governs their application. With that limit stated plainly, here is what the five surveyed for this page do with a 5-5 result in Combined Science.
A 5-5 falls short of every published science threshold across all five institutions. The lowest bar in the survey, Blackpool Sixth Form College, asks for "grade 6 and 5" in Combined Science (higher tier) for all three sciences — meaning even Blackpool's threshold needs one grade higher than a straight 5-5. Peter Symonds College, Hills Road, Sydenham & Forest Hill and Barton Peveril all sit at or above Blackpool's bar for every subject checked.
That does not mean the door is closed everywhere. Blackpool Sixth Form College names a specific alternative: "If you don't meet these entry requirements, our Foundation Programme could help you start your journey at Blackpool Sixth." Barton Peveril's requirement includes a minimum average GCSE score of 5.5 across all GCSEs, which is a separate mechanism from the single subject grade and can allow a strong overall profile to offset one lower science result. A student with 5-5 in Combined Science should read their own shortlisted college's course page for the specific subject, or ask its admissions team directly, rather than treat any one of these five as the general rule.
Not sure which of these five figures applies to your own shortlisted college, or whether your result clears a specific science subject? Our specialist tutors are rated 4.8 out of 5 on Trustpilot from 58 reviews, and 91% of our students achieve their desired grades. Talk through the actual published requirement for your college, not a forum guess.
Book a Free Consultation Message us on WhatsAppEvery one of the five institutions checked pairs its Combined Science threshold with a separate GCSE Maths grade, and in four of the five cases that Maths grade is not fixed — it changes by subject, in the same way the science grade does.
Hills Road Sixth Form College's own published wording: for Biology, "GCSE grade 7 in both Combined Sciences and grade 6 in Mathematics"; for Chemistry, "GCSE grade 7 in both combined science GCSE's and 7 in Mathematics"; for Physics, "GCSE grade 7 in both combined sciences and 7 in Mathematics." The Combined Science grade stays at 7-7 across all three subjects; the Maths grade rises from 6 to 7 for Chemistry and Physics.
The Sydenham & Forest Hill 6th Form publishes the identical pattern at a lower overall level: "a grade 6 in Combined Science, Grade 6 in Maths" for Biology, against "a grade 6 in Combined Science, Grade 7 in Maths" for both Chemistry and Physics. Blackpool Sixth Form College asks for Maths grade 5 for Biology and for Chemistry, and Maths grade 6 "preferred" for Physics. Barton Peveril College is the one institution surveyed that fixes the same Maths grade — grade 6 — across all three sciences, alongside a grade 5 in English GCSE.
Peter Symonds College does not publish a separately fixed Maths threshold at all: its requirement is three GCSE grades — the two Combined Science grades and the Maths grade — that can be achieved "in any order". A student who is confident in their science grades but weaker in Maths should check which of these two mechanisms their own shortlisted college uses, because a fixed separate Maths threshold and an any-order pool of three grades are not the same test.
A student holding a 2026 Combined Science result, or choosing GCSE options with A-level science in mind, should check three things on the actual course page of every college on their shortlist, rather than assume a figure from this page or any other applies directly: the Combined Science grade required for the specific science subject, not "science" as a single category; the separate GCSE Maths grade, since it is not always the same as the science grade and is not always fixed; and whether the college publishes an alternative route, such as Blackpool's Foundation Programme or Barton Peveril's average-score mechanism, for a result that falls just short.
The mechanics of the two GCSE Combined Science routes — how the double award is graded, what switching between combined and separate sciences involves, and what a student on either route should revise differently before starting A-levels — are covered in our Triple vs Combined Science GCSE guide. For grammar school sixth forms specifically, including the wider set of subject-specific thresholds beyond science, see our grammar school sixth form entry requirements guide. Our GCSE Biology, GCSE Chemistry and GCSE Physics pages cover preparation for each separate GCSE, and our GCSE tuition page covers both routes.
At some named colleges, yes. Peter Symonds College in Winchester and the Sydenham & Forest Hill 6th Form in South London both accept a grade 6 in Combined Science for A-level Biology, alongside a specified GCSE Maths grade. Barton Peveril College in Eastleigh also accepts a minimum grade 6, provided the student's average GCSE score reaches 5.5. Hills Road Sixth Form College in Cambridge, a selective college, sets a higher bar of 7-7 in Combined Science for the same subject. The grade that clears one college's Biology course does not automatically clear another's, so the published requirement of the specific college a student is applying to is the only figure that actually matters.
Not everywhere. Hills Road Sixth Form College, a selective sixth-form college in Cambridge, publishes a requirement of grade 7 in both Combined Science GCSEs plus grade 7 in Maths for A-level Chemistry. Peter Symonds College in Winchester asks for three GCSE grades of 7, 6 and 6 in any order across Combined Science and Maths for the same subject — a lower bar overall. Blackpool Sixth Form College and Barton Peveril College both accept a 6 and a 5 in Combined Science, higher tier, for Chemistry, alongside a separate Maths grade. Whether 7-7 is required depends entirely on which college's course page a student is reading.
Across the five named sixth forms and colleges surveyed for this page, a 5-5 result in Combined Science falls short of every published science A-level threshold — the lowest of the five, Blackpool Sixth Form College, asks for a 6 and a 5, so even that requirement needs one grade higher than 5-5. Blackpool names a Foundation Programme as a route in for students who do not meet its entry requirements, and Barton Peveril's average GCSE score of 5.5 can offset a single lower subject grade. These five are not a complete national picture, so a student in this position should check their own shortlisted college's course page directly, rather than assume the same answer applies everywhere.
Among the five institutions checked for this page, yes. Hills Road Sixth Form College, a selective sixth-form college in Cambridge, asks for 7-7 in Combined Science for Biology, Chemistry and Physics alike. The four non-selective institutions surveyed — Peter Symonds College, the Sydenham & Forest Hill 6th Form, Blackpool Sixth Form College and Barton Peveril College — each ask for a 6, or a 6 and a 5, depending on the subject. That is a real and measurable gap between one selective college and four non-selective ones checked directly for this page, not proof that every selective sixth form in the country sets the same bar.
At four of the five institutions checked, yes, and the Maths grade is not always the same as the science grade. Hills Road Sixth Form College asks for Maths grade 7 for Chemistry and Physics but only grade 6 for Biology. The Sydenham & Forest Hill 6th Form follows the same pattern: Maths grade 6 for Biology, Maths grade 7 for Chemistry and Physics. Blackpool Sixth Form College asks for Maths grade 5 for Biology and Chemistry. Peter Symonds College is the exception: its published requirement is three GCSE grades in any order across the two Combined Science grades and Maths, rather than a separately fixed Maths threshold.
It depends on each subject's own published requirement at the chosen college, not on a single rule for science as a group. At Peter Symonds College, Combined Science students need GCSE grades 6, 6 and 5 for Biology but grades 7, 6 and 6 for Chemistry and for Physics, so a student could meet the Biology bar without meeting the other two. A student wanting to keep all three sciences open should check the published entry requirement for each individual subject at their shortlisted college, since colleges that publish subject-specific figures, like the five named on this page, do not set one figure for science as a whole.
Ask the college directly and check for a named alternative route before assuming the door is closed. Blackpool Sixth Form College states that its Foundation Programme "could help you start your journey" for students who do not meet its published entry requirements. Barton Peveril College sets a minimum average GCSE score of 5.5 alongside its subject grade, which can allow a strong overall profile to offset one lower science grade. Because every one of the five institutions surveyed here sets its own figures and its own fallback options, the college's own admissions page or admissions team is the only reliable source for a student's actual situation.
Reviewed August 2026: every entry requirement on this page is quoted from the named institution's own current A-level course page, checked directly rather than taken from a forum, a third-party listing site, or a previous year's figure. Entry requirements are set by each institution and can change between admissions cycles; a reader relying on a figure here for an application should still confirm it on the college's own page before applying.
A named grade on a named college's course page is the only figure that governs an actual application — and turning that page into an offer still comes down to the specific subject, not "science" in general.
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