# GCSE Combined Science vs IGCSE Science: What's the Difference for Private Candidates?

**By English Maths Science Tuition & Examination Centre** · 2026-09-08

GCSE Combined Science and IGCSE Science (Double Award) both count as two GCSEs and cover Biology, Chemistry and Physics — but they differ in exam board, number of papers, and whether practical work is compulsory. For private candidates deciding between the two, those differences affect which one suits your circumstances, especially if you don't have access to a school laboratory.

## What's the Difference Between GCSE Combined Science and IGCSE Science?

GCSE Combined Science and IGCSE Science differ mainly in exam board, number of papers, and whether practical work is compulsory, though both count as two GCSEs. GCSE Combined Science is assessed across 6 papers with AQA or Edexcel and requires practical activities, while IGCSE Science (Double Award) is assessed across 3 papers with Edexcel only and has no compulsory practical requirement. Both use the same style of double grading, for example 7-7 or 7-6, based on your average mark across all papers taken.

## Which Exam Boards Offer Each Qualification?

We are an approved exam centre for GCSE Combined Science with AQA and Edexcel, and for IGCSE Science (Double Award) with Edexcel (Pearson) only. If your revision materials or previous coursework follow a specific exam board's specification, it's worth checking this matches before you book, since switching boards partway through preparation can cause problems.

## Do I Need to Complete Practical Work for GCSE or IGCSE Science?

GCSE Combined Science requires all first-time candidates to carry out practical activities, while IGCSE Science has no compulsory practical requirement at all. The GCSE specification states that practical activities "must be carried out by all students taking GCSE science subjects for the first time." These aren't separately assessed, but the written exam includes questions based on them, so candidates without hands-on experience are at a disadvantage — practicals are optional only for candidates retaking under the current specification.

Because lab access isn't something every private candidate or home-educated student has, we offer an optional [GCSE Exams + Practical add-on](/products/gcse-exams-practical), which includes a dedicated practical skills course covering the required practicals for your specification alongside your exam booking.

IGCSE Science takes a different approach: you should be familiar with practical methods and key experiments for the exam questions, but there's no requirement to complete or provide evidence of practical activities beforehand — which is one reason some private candidates without lab access find it the more straightforward route.

## How Many Papers Will I Sit, and How Are Grades Awarded?

GCSE Combined Science is assessed across 6 papers and IGCSE Science (Double Award) across 3 papers, both graded on your average mark across all papers sat. Both qualifications award a double grade rather than a single one — for example 7-7 (two grade 7s) or 7-6 — and the two halves of your grade will always be the same or adjacent (a 7-5 isn't possible). For GCSE Combined Science, Foundation tier caps out at grade 5-5, while Higher tier covers grades 9-9 down to 3-3, with anything below that awarded U (unclassified). Your grade doesn't indicate whether you performed better in one science than another — it reflects your overall average.

## What Do I Need to Bring to the Exam?

Both exams require the same core equipment — black pen, an HB pencil for graphs and diagrams, a protractor, ruler, eraser, and a JCQ-compliant scientific calculator. Your calculator's memory must be cleared before the exam, and it must not store any formulae or other information. It's worth checking this the night before, since calculators that don't meet JCQ rules can be confiscated on the day.

## Which Should I Choose as a Private Candidate?

The right choice usually comes down to your access to a lab rather than one qualification being "better" than the other. If you have lab access, or are willing to book our practical skills add-on, GCSE Combined Science with AQA or Edexcel is a well-recognised route that many students use to progress to A Level Biology, Chemistry and Physics. If you don't have lab access and want to avoid the practical requirement altogether, IGCSE Science (Double Award) with Edexcel offers the same dual-award outcome across fewer papers, without that requirement. Both are accepted as equivalent to two GCSEs for further study and college applications. If you're unsure, our team is happy to talk through which fits your situation.

## Frequently Asked Questions

### Is IGCSE Science easier than GCSE Combined Science for private candidates?

Not inherently easier, but IGCSE Science has no compulsory practical requirement, which can make it more accessible for private candidates without lab access, while GCSE Combined Science expects hands-on practical experience.

### How many exam papers will I sit for each qualification?

GCSE Combined Science Trilogy is assessed across 6 papers, while IGCSE Science (Double Award) is assessed across 3 papers, with your grade based on your average mark across those papers.

### Do I need to do practical work for GCSE Combined Science as a private candidate?

Yes — GCSE specifications require all first-time candidates to carry out practical activities, and while these aren't separately assessed, the written exam includes questions based on them.

### Which exam boards can I sit GCSE Combined Science and IGCSE Science with?

We offer GCSE Combined Science with AQA and Edexcel, and IGCSE Science (Double Award) with Edexcel (Pearson) only.

### Are GCSE Combined Science and IGCSE Science worth the same number of qualifications?

Yes — both are dual-award qualifications worth two GCSEs, graded on the same double-grade scale (for example 7-7 or 7-6) based on your average mark across all papers.

### Can I get help with GCSE Science practical activities if I don't have lab access?

Yes — we offer an optional GCSE Exams + Practical add-on covering the required practical activities for private candidates and home-educated students without access to a school laboratory.

## Ready to Book?

Ready to book your GCSE or IGCSE Science exam? Choose your option:

[GCSE Combined Science](/products/gcse-combined-science-trilogy-summer-exam) [IGCSE Science – Summer](/products/igcse-science-double-award-summer-exam) [IGCSE Science – November](/products/igcse-science-double-award-winter-exam)

Have questions before you book? [Contact our team](/pages/contact) — we're happy to help you decide which qualification fits your circumstances.

**Tags:** GCSE, IGCSE, JCQ, private candidate, science

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> Source: [English Maths Science Tuition & All Subjects Exam Centre](https://www.englishandmaths.com/blogs/blog/gcse-vs-igcse-science-private-candidates)