What does a grade like 6-5 mean?

Combined Science gives two GCSE grades side by side. A 6-5 is worth one grade 6 and one grade 5, so it counts as two GCSEs.

Is Combined Science enough for A-Level Biology, Chemistry or Physics?

Usually yes. Many sixth forms accept Combined Science, often asking for a 6-6 or 7-7 on Higher tier. Check the entry requirements of the sixth forms your child is considering.

What is the difference between Combined Science and triple science?

Triple science is three separate GCSEs in biology, chemistry and physics, with more content and more exam time. Combined Science covers less of each and leads to two GCSEs.

Can my child change from Foundation to Higher?

Usually yes, up to the school's entry deadline in Year 11. Schools often decide using mock results, so a strong mock can make the case.

What is a 4-4, and why does it matter?

A 4-4 is a standard pass in both GCSEs. Many sixth forms and colleges ask for at least a 4-4 in science for their courses.

Which exam board is easiest?

None, really. Boundaries are set after marking so that each grade means the same standard on every board. Your child should prepare for the board their school has chosen.

GCSE guide · checked October 2026

GCSE Combined Science, explained simply

Biology, chemistry and physics in six exams, worth two GCSEs. This page explains how the double grades work, the marks your child really needs for each one, and how to revise three sciences at once. Pick your exam board and tier and the page changes to match.

6 exams
Worth 2 GCSEs
No coursework
Grades 9-9 to 1-1

Book a free assessment (opens our booking calendar) Build a past paper mock

Exam board

Tier

Not sure which board? Ask your child's school, or check the front of a mock paper.

The exams at a glance

AQA GCSE Combined Science (8464), Higher tier. 6 papers, 7 hours 30 minutes of exams and 420 marks in total. Each paper is worth 17% of the grade.

PaperCalculatorTimeMarks

Biology 1Cells, organisation, infection, bioenergetics1 hour 15 minutes70 (17%)

Biology 2Homeostasis, inheritance, ecology1 hour 15 minutes70 (17%)

Chemistry 1Atoms, bonding, quantities, changes, energy1 hour 15 minutes70 (17%)

Chemistry 2Rates, organic, analysis, atmosphere, resources1 hour 15 minutes70 (17%)

Physics 1Energy, electricity, particles, atoms1 hour 15 minutes70 (17%)

Physics 2Forces, waves, magnetism1 hour 15 minutes70 (17%)

Specification: AQA GCSE Combined Science (8464)

What's in the exams

Every board gives biology, chemistry and physics two papers each, so each science is a third of the grade. There is no separate science grade: one weak science pulls down both GCSEs.

Biology33%
Chemistry33%
Physics33%

Foundation or Higher?

Foundation

Grades 1-1 to 5-5. The questions are more straightforward, and 5-5 is the top grade possible. It suits students aiming for a 4-4 standard pass.

Higher

Grades 4-3 to 9-9. Students need it for grades above 5-5, and most sixth forms want Higher tier for A-Level sciences. The risk: fall below the 4-3 mark and there is no grade at all.

The marks you really need for each grade

You do not need 90% for a top grade. Grade boundaries are set after the exams are marked, so a grade stays the same standard even when the papers are harder. These are the real AQA Higher boundaries from June 2026:

GradeMarks neededAs a percentageChart

9-9298 out of 42071%

9-8280 out of 42066.7%

8-8262 out of 42062.4%

8-7245 out of 42058.3%

7-7228 out of 42054.3%

7-6208 out of 42049.5%

6-6188 out of 42044.8%

6-5168 out of 42040%

5-5149 out of 42035.5%

5-4130 out of 42031%

4-4111 out of 42026.4%

4-3101 out of 42024%

Source: AQA, GCSE grade boundaries June 2026 (Combined Science: Trilogy). Boundaries change slightly every year.

Your target score in practice papers

Sit a full set of past papers under timed conditions every few weeks. Work out the percentage for each set, ignore your single worst result (everyone has an off day) and average the rest. Aim for:

76%

to secure a grade 9-9

68%

to secure a grade 8-8

60%

to secure a grade 7-7

We add 5 percentage points to last year's boundary, because boundaries move a little each year and exam nerves cost marks.

Past paper mock builder

Pick an exam series and we'll set out the full AQA Higher mock: which papers to sit, how long to allow and where to download them. Then type in your marks to see the grade they would have earned.

Exam series

Biology 1, June 2026 · Cells, organisation, infection, bioenergetics · 1 hour 15 minutes

Your mark (out of 70)
Biology 2, June 2026 · Homeostasis, inheritance, ecology · 1 hour 15 minutes

Your mark (out of 70)
Chemistry 1, June 2026 · Atoms, bonding, quantities, changes, energy · 1 hour 15 minutes

Your mark (out of 70)
Chemistry 2, June 2026 · Rates, organic, analysis, atmosphere, resources · 1 hour 15 minutes

Your mark (out of 70)
Physics 1, June 2026 · Energy, electricity, particles, atoms · 1 hour 15 minutes

Your mark (out of 70)
Physics 2, June 2026 · Forces, waves, magnetism · 1 hour 15 minutes

Your mark (out of 70)

Download the papers and mark schemes: AQA official past papers or Save My Exams past papers. Exam boards keep the most recent series for schools only for a while, so if the newest one isn't there, take the one before.

Enter your marks for each paper to see the grade they would have earned.

What Combined Science is really about

Where the word comes from

"Science" comes from the Latin scientia, meaning "knowledge", from scire, "to know". Until the 1800s, scientists in Britain were usually called "natural philosophers"; the word "scientist" was coined by William Whewell of Cambridge in 1833.

Where it comes from

Modern science grew from careful observation and experiment. In London, the Royal Society was founded in 1660 to share experiments, and Isaac Newton became its president in 1703. Michael Faraday's discoveries about electricity and magnetism at the Royal Institution in the 1830s led to the electric motors and generators we still use.

Why it's still taught

Combined Science gives a solid grounding in how the living and physical world works, from vaccines to electricity bills. It is worth two GCSEs, and a good pair of grades keeps doors open to A-Level sciences, nursing, engineering apprenticeships and medicine.

How to do well in GCSE Combined Science

Learn the required practicals

Each board sets a list of practicals and asks about them in the exams: the method, the variables and what the results show. Know each one cold.

Practise the maths

Many marks need calculations: rearranging equations, units, graphs and percentages. Physics leans on this most, so practise it weekly.

Learn the physics equations

Some equations are given on an equation sheet and some must be learned. Check your board's list and learn the ones that are not given.

Turn notes into questions

Convert each topic into flashcards (question on the front, answer on the back) and test yourself rather than re-reading.

Use command words

"Describe" asks what happens; "explain" asks why. Reading the command word carefully is the difference between 1 mark and 3.

Revise all three sciences every week

Rotating biology, chemistry and physics stops one science going cold, which matters because they are added together into one double grade.

The three best places to revise

Our teachers' picks. We have no connection with these sites.

Questions parents ask

Not sure where your child stands?

Our free 45-minute assessment often uses a real past paper, so you'll know their likely grade and exactly what to work on. Lessons online across the UK, or at our seven London hubs.

Book a free assessment (opens our booking calendar) Online lessons

GCSE Combined Science, explained simply

The exams at a glance

What's in the exams

Foundation or Higher?

Foundation

Higher

The marks you really need for each grade

Your target score in practice papers

Past paper mock builder

What Combined Science is really about

Where the word comes from

Where it comes from

Why it's still taught

How to do well in GCSE Combined Science

Learn the required practicals

Practise the maths

Learn the physics equations

Turn notes into questions

Use command words

Revise all three sciences every week

The three best places to revise

Cognito

Freesciencelessons on YouTube

BBC Bitesize

Questions parents ask

What does a grade like 6-5 mean?+

Is Combined Science enough for A-Level Biology, Chemistry or Physics?+

What is the difference between Combined Science and triple science?+

Can my child change from Foundation to Higher?+

What is a 4-4, and why does it matter?+

Which exam board is easiest?+

Not sure where your child stands?

Sources

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The exams at a glance

What's in the exams

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The marks you really need for each grade

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Past paper mock builder

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Where the word comes from

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Why it's still taught

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The three best places to revise

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