GCSE Combined Science 2026: Grading Across England, Wales and Northern Ireland

GCSE Combined Science is the name given to a family of double-award science qualifications, each worth two GCSE grades from one set of exam papers rather than three separate sciences. In England, five specifications run across three exam boards. Wales is moving from a 15-point legacy grading scale to a new 8-point scale, first taught from September 2026. Northern Ireland runs a third, separate qualification altogether.

How Many Combined Science Qualifications Exist, and What Are They Called?

“Combined Science” is not one product sold under different labels — it is a family of related but separately regulated double-award qualifications, and the one your child actually sits depends on their exam board and, outside England, on which UK nation their school is in. In England, three exam boards run five live specifications between them. AQA runs two: Combined Science: Trilogy (8464), assessed across six subject-based papers, two each in biology, chemistry and physics; and Combined Science: Synergy (8465), a structurally different specification built around four theme-based papers rather than six subject-based ones. Pearson Edexcel runs one specification, Combined Science (1SC0) — its paper structure, marks and grade boundaries are covered in full on our Edexcel GCSE Combined Science page rather than repeated here. OCR runs two suites: Gateway Science's Combined Science A (J250) and Twenty First Century Science's Combined Science B (J260).

OCR itself has traded under the name Cambridge OCR since September 2025. Its own specification document explains the transition plainly: “As of September 2025, our name is Cambridge OCR… You'll continue to see the OCR or Oxford Cambridge and RSA Examinations name while we work to update our material to our new name, Cambridge OCR.” Both names describe the same exam board and the same specifications, and this page uses OCR throughout, matching the codes printed on a statement of entry.

Outside England, the qualification changes shape again. Wales runs its own specification, regulated by Qualifications Wales rather than Ofqual, and Northern Ireland runs a third qualification entirely, set by CCEA. That is three UK nations offering a Combined Science double award — Scotland does not: its National 5 and Higher qualifications are a different system and do not include a GCSE-style Combined Science double award at all. The grading mechanics behind AQA's Trilogy and Synergy, the double-grade format, and how a mark converts to a grade under each English board are covered in full in our Combined Science grades explained guide. Wales and Northern Ireland — genuinely different systems that nothing else on this site covers — are the subject of the next two sections.

Why Is Wales Replacing Its Combined Science Grading Scale From September 2026?

Wales runs Combined Science under the name GCSE Science (Double Award), regulated by Qualifications Wales rather than by Ofqual, and its grading scale bears no resemblance to England's 9-1 system. The legacy version is graded on a 15-point double-letter scale. Qualifications Wales describes it directly: “Previously, double award grades have been awarded on a 15-point scale, meaning results could be AA, AB, BC, CD, and so on,” running the full sequence “A*A*, A*A, AA, AB, BB, BC, CC, CD, DD, DE, EE, EF, FF, FG, GG.” Mixed pairs such as AB or BC are a genuine outcome under that scale, not a typo — a candidate can be awarded two different letters across their two grades.

That scale is being replaced by a new qualification, GCSE The Sciences (Double Award), graded on a simplified 8-point scale that only ever awards identical double letters. Qualifications Wales's own description: “The new National Qualifications double award GCSEs will be graded on an 8-point scale. This means learners will get two identical letters in their grade,” running “A*A*, AA, BB, CC, DD, EE, FF, GG.” A mixed result such as AB is simply not possible under the new scale.

The timing matters for exactly the families reading this now. Qualifications Wales states that “the new GCSE The Sciences (Double Award) will be introduced later in September 2026 and will be awarded for the first time in summer 2028. This means that in summer 2027 a mix of 15-point and 8-point double award grades will be issued. From summer 2028 all double awards will be graded on the new 8-point scale.” In practice: a pupil starting Year 10 in a Welsh school in September 2026 is the first cohort on the new qualification and will receive an 8-point double-letter grade in summer 2028. A pupil already in Year 10 or Year 11 when the new qualification starts teaching in September 2026 continues on the legacy GCSE Science (Double Award) and is graded on the old 15-point scale when they sit their exams. The two qualifications are not a simple hand-over from one to the other. For a genuine two-year stretch, running through summer 2027 and into summer 2028, both scales are in concurrent, live use, and a family should check which course their own child is actually enrolled on rather than assume either scale applies.

What Does Northern Ireland Call Combined Science, and How Is It Graded?

Northern Ireland runs a third system again, set by CCEA rather than by an English awarding body or by Qualifications Wales. CCEA's own qualification page names it directly: “Science Double Award. Subject Code: 1370. CCEA qualifications in science are available at Entry Level and GCSE (Single Award and Double Award).” Combined Science, Double Award Science and Science Double Award all describe the same shape of qualification — two GCSE grades from one combined course — but CCEA is the only one of the three regulators to grade it on a scale that matches neither England's numeric system nor Wales's double-letter system in the same form.

CCEA's own guidance to students and parents lists the full grade scale: “GCSE Double Award Science: A*A*, A*A, AA, AB, BB, BC*, C*C*, C*C, CC, CD, DD, DE, EE, EF, FF, FG, GG, U, X.” That is 18 named grade outcomes before the two non-grades, U and X, built on double letters rather than the numbers used across the border in England. A family moving between a school in Belfast or Londonderry and a school in England is not moving between two versions of the same grade scale — they are moving between two different ways of describing the same underlying qualification, and a transcript from one system needs translating rather than simply reading across.

What Parents Say

Is Combined Science “Worth Less” Than Triple Science?

The concern behind this question is usually about doors closing, not about the qualification itself, and on that specific point AQA's own specification is direct: “all our science qualifications provide opportunities for progression. Combined Science: Trilogy gives students the option to progress to A-levels in science or other subjects.” Combined Science is not designed, or described by the board that sets it, as a qualification that rules out further study in science.

What actually varies is not whether a sixth form will consider a Combined Science grade, but what grade within it a specific college asks for, and that differs by college and by subject in ways worth checking individually rather than assuming from a general reputation. Five named sixth forms' published entry requirements for progressing from Combined Science into A-level Biology, Chemistry and Physics — including cases where the same college asks for a different grade in different sciences — are set out in full in our Combined Science A-levels guide, which is the right place to check a specific target rather than a general one.

How Does Leading Tuition Support Combined Science Families, Whichever Board or Nation?

Five specifications in England, a transitioning grading scale in Wales and a third system in Northern Ireland is a lot of variation to sit underneath one subject name. The starting point for any of it is establishing exactly which qualification a child is actually entered for — the code on a statement of entry in England, or the specification named in a Welsh or Northern Irish school's own paperwork. Our expert GCSE Combined Science tutors help students on AQA Trilogy and Synergy, Edexcel's 1SC0, both OCR suites, Wales's Sciences (Double Award) and CCEA's Double Award Science, building each programme around the actual papers, tiering rules and grading scale a student is sitting, rather than a generic combined-science topic list.

For a family already on the separate-sciences route, or considering it, our GCSE Biology, GCSE Chemistry and GCSE Physics pages cover each subject individually; for the Edexcel double award specifically, our Edexcel GCSE Combined Science page covers the paper structure, marks and required practicals in full. 91% of our students achieve their desired grades, and we are rated 4.8 out of 5 on Trustpilot from 58 reviews.

Frequently Asked Questions

Reviewed September 2026: specification codes, grading scales and progression statements were checked against AQA, Pearson Edexcel, OCR, Qualifications Wales and CCEA's own published material. Published 7 September 2026.