Cambridge, Pearson Edexcel and OxfordAQA all offer international qualifications at GCSE level. The main differences are what you study, how you are assessed, which grades you can achieve and when you can take your exams.
There is no reliable rule that Cambridge is always harder, Edexcel is always easier or OxfordAQA is best for a particular type of student. To make a useful comparison, start with the specific subject and qualification code.
Example
Cambridge IGCSE Mathematics 0580 has a non-calculator paper from 2025, while Edexcel International GCSE Mathematics A and OxfordAQA International GCSE Mathematics allow calculators on both papers. Cambridge Biology has a separate Practical Test or Alternative to Practical paper, while Edexcel and OxfordAQA Biology assess practical understanding inside their written exams.
These differences affect your revision far more directly than an exam board's reputation.
Cambridge vs Edexcel vs OxfordAQA: quick comparison
| Feature | Cambridge International | Pearson Edexcel | OxfordAQA |
|---|---|---|---|
| Qualification name | Cambridge IGCSE | Pearson Edexcel International GCSE | OxfordAQA International GCSE |
| Grading | A*–G; selected subjects also have separate 9–1 versions | 9–1 | 9–1 |
| Main exam series | June and November; selected syllabuses also in March (India and Romania) | May/June and November | May/June and November |
| Assessment routes | Generally linear; coursework or alternative components in some subjects | Linear, with modular alternatives for selected subjects | Generally linear; non-exam assessment alternatives in some subjects |
| Maths tiers (courses compared below) | Core and Extended | Foundation and Higher | Core and Extension |
| Most important detail to check | Syllabus code, exam year and component route | Specification code, linear/modular route and tier | Specification code, exam year and assessment route |
Not every subject or route is available in every series. Confirm your actual entry with your school or exam centre.
Note
Two scheduling details matter. Edexcel's International GCSE January series ended in 2023 and was replaced by a November series (International A Level schedules are different). Cambridge's March series is for centres in India and Romania, and only selected syllabuses are available.
Why your IGCSE exam board matters
Your exam board sets the syllabus or specification, writes the assessments, publishes marking guidance and awards the qualification.
Your school chooses which courses it teaches and usually picks the assessment route. You might therefore study subjects from different boards, for example Cambridge English and Edexcel Maths. Knowing your board tells you:
- the content you need: topics, required depth and any tier-specific material;
- the assessments you must complete: written papers, coursework, practicals or speaking tests;
- how to earn marks: method marks, scientific explanations, essay criteria and assessment objectives;
- the grades available to you: particularly where a course has tiers;
- your exam and resit options: which depend on the qualification and route.
Key point
Knowing only that you study "IGCSE Biology" or "Edexcel Maths" is not enough. You also need the subject code and exam year.
How to identify your IGCSE exam board and syllabus
Ask your teacher or exams officer for:
- the full qualification name;
- the subject or syllabus code;
- your exam year;
- your tier and assessment route, where applicable.
Once entries have been made, your statement of entry is the most useful document. Here are some common examples:
| Subject | Cambridge | Edexcel | OxfordAQA |
|---|---|---|---|
| Mathematics | 0580: Mathematics (A*–G) | 4MA1: Mathematics A (linear) | 9260: Mathematics |
| Biology | 0610: Biology (A*–G) | 4BI1: Biology (linear) | 9201: Biology |
| English | 0500: First Language English (A*–G) | 4EA1: English Language A (linear) | 9270: English Language |
These are examples, not a complete list of equivalent courses. Cambridge has separate codes for its 9–1 versions, and Edexcel modular qualifications have different codes from their linear versions; see Edexcel IGCSE modular vs linear.
Watch out
Check textbook editions too. A book with the right board name may still cover an older specification.
IGCSE Maths: Cambridge vs Edexcel vs OxfordAQA
Maths is a clear example of why you should compare actual qualifications. The table covers Cambridge Mathematics 0580, Edexcel Mathematics A 4MA1 (linear) and OxfordAQA Mathematics 9260.
| Feature | Cambridge 0580 | Edexcel Mathematics A 4MA1 | OxfordAQA 9260 |
|---|---|---|---|
| Tiers | Core / Extended | Foundation / Higher | Core / Extension |
| Lower-tier grades | C–G | 5–1 | 5–1 |
| Upper-tier grades | A*–E | 9–4, with an allowed grade 3 | 9–4, with an allowed grade 3 |
| Papers | Core: 1 and 3; Extended: 2 and 4 | Foundation: 1F and 2F; Higher: 1H and 2H | Core: 1C and 2C; Extension: 1E and 2E |
| Calculator rules | Papers 1 and 2 non-calculator; Papers 3 and 4 calculator | Calculator allowed on both papers | Scientific calculator on both papers |
| Duration | Core: 2 × 1 hour 30 minutes; Extended: 2 × 2 hours | 2 × 2 hours at either tier | Core: 2 × 1 hour 30 minutes (80 marks each); Extension: 2 × 2 hours (100 marks each) |
The details come from the Cambridge 0580 syllabus for 2025–2027, Pearson's 4MA1 specification and OxfordAQA's 9260 qualification page. They should not be applied automatically to other Maths courses.
What this means for your revision
- Cambridge 0580: practise arithmetic, fractions, algebra and exact answers without a calculator. Use specimen papers and recent papers in the format introduced in 2025. Older questions still help with individual topics, but older complete papers do not reproduce the current exam structure.
- Edexcel Mathematics A: practise choosing a method, showing working and using your calculator accurately. Calculator access does not tell you which equation to form or how to justify an answer. See Edexcel IGCSE Maths A vs B if you are unsure which Edexcel course you take.
- OxfordAQA Mathematics: practise the content for your tier and complete multi-step problems within the time limit. Both papers can assess any part of the specification, and written methods still matter.
Your tier can limit your final grade
A student who needs a grade 6 cannot achieve it on Edexcel Foundation or OxfordAQA Core Maths, and a Cambridge Core candidate cannot achieve above a C. Before agreeing to a tier, ask:
- What grade do I need for my next course?
- Can this tier award that grade?
- What do my recent timed assessments suggest?
- Which extra topics would I need for the upper tier?
Check
Cambridge International Mathematics 0607, Edexcel Mathematics B and Edexcel modular Mathematics A each need their own specification checks.
You can see past boundaries on Starley's pages for Cambridge 0580 and Edexcel 4MA1.
IGCSE Science: practical exams and award sizes
In science, two questions matter most: how are practical skills assessed, and how many qualifications or grades does the course award?
Cambridge Biology: Practical Test or Alternative to Practical
For Cambridge IGCSE Biology 0610 in 2026–2028, students take a multiple-choice paper, a theory paper and one practical component:
| Practical option | What it involves |
|---|---|
| Paper 5: Practical Test (1 hour 15 minutes) | You carry out experimental work during the assessment |
| Paper 6: Alternative to Practical (1 hour) | You answer written questions about experimental skills |
Either option is worth 40 marks and 20% of the qualification, and Core and Extended routes are both available, according to the 0610 syllabus.
Watch out
Alternative to Practical still needs experimental understanding. Practise measurements, observations, graphs, variables, planning experiments and evaluation. Check your own Chemistry, Physics or combined science syllabus rather than assuming every detail matches Biology.
Edexcel sciences: practical skills in written exams
Edexcel's linear Biology 4BI1, Chemistry 4CH1 and Physics 4PH1 courses are untiered and assessed through written exams, with experimental skills tested through questions about practical work. In Biology 4BI1, Paper 1 assesses the shared science content, while Paper 2 can assess the full specification, including the extra Biology-only content.
Note
"Untiered" means there are no separate Foundation and Higher routes. It does not mean every question has the same difficulty.
OxfordAQA Biology: either paper can assess any topic
OxfordAQA Biology 9201 has two written papers of 1 hour 30 minutes, each worth 50%, and either paper can assess any part of the specification. Practical knowledge is assessed within those papers, with no separate practical exam.
Tip
Avoid making a "Paper 1 topics" and "Paper 2 topics" split that the specification does not support. See Starley's Cambridge 0610 boundaries for how practical-route grades are set.
Separate science vs combined or double award
Studying Biology, Chemistry and Physics does not automatically mean you receive three qualifications. Before choosing a science course, confirm:
- whether it awards one, two or three qualifications;
- how much content you study in each science;
- which exams you must take;
- whether it meets your intended A-level or IB science entry requirements.
Terms such as "combined science", "double award" and "separate sciences" describe different courses and should not be treated as interchangeable.
IGCSE English: compare the course and assessment route
"IGCSE English" can mean English Language, First Language English, English as a Second Language or English Literature. These qualifications serve different purposes and have different assessment requirements.
| Course example | Assessment choices to check | Important revision details |
|---|---|---|
| Cambridge First Language English 0500 | Paper 1, plus either Paper 2 or a coursework portfolio; optional Speaking and Listening (separately endorsed) | Exam-year syllabus, writing tasks and chosen components |
| Edexcel English Language A 4EA1 (linear) | Exam-only or coursework route; optional spoken language endorsement | Anthology requirements, paper tasks and current marking criteria |
| OxfordAQA English Language 9270 | Paper 1, plus either Paper 2 or a non-exam assessment; optional separate Speaking and Listening endorsement | Reading tasks, writing requirements and chosen route |
These options are qualification-specific, and your school or centre decides which available route it offers.
Important syllabus checks for 2026 and 2027
- Cambridge First Language English 0500: a revised 2027–2029 syllabus applies from the 2027 exam year. Paper 1 is now "Reading and Directed Writing", with the summary task replaced by a directed writing task. Use the syllabus for the year you sit the exam, not the year you started studying.
- Edexcel English Language A 4EA1: Pearson published specification and mark scheme updates that apply from November 2025, including a revised Paper 2 mark scheme and a fixed list of writing text types for Paper 1.
- English Literature: check your prescribed texts, anthology, exam-year validity and whether each paper is open or closed book.
- English as a Second Language: check speaking requirements and whether the exact qualification meets a future institution's English-language policy.
Remember
A strong essay for one exam may need adapting for another. Practise the specific task and assess it against the correct criteria.
Is Cambridge IGCSE harder than Edexcel or OxfordAQA?
There is no sound basis for ranking a whole board as universally harder or easier. A paper might feel harder because it:
- includes a topic you have not studied;
- uses unfamiliar question wording;
- needs more writing or faster calculations;
- tests experimental understanding differently;
- belongs to a different tier or qualification.
These differences matter, but they do not show that one board is harder across every subject.
Watch out
A lower grade boundary does not automatically mean an easier qualification. A demanding paper may need fewer raw marks to show the required standard.
How to compare difficulty usefully
If you have a genuine choice between courses:
- Pick a current specimen paper or suitable recent paper from each.
- Attempt questions on overlapping topics under timed conditions.
- Mark each attempt using its own mark scheme.
- Compare time pressure, unfamiliar content and why you lost marks.
- Discuss the results with a teacher who knows both specifications.
This gives you a more useful picture than claims such as "Edexcel questions are always straightforward". Avoid comparing board-wide grade 9 rates as though identical groups of students took identical exams.
IGCSE grades and marking explained
Edexcel and OxfordAQA use 9–1 grading, with 9 the highest grade.
Cambridge uses A–G* for its standard IGCSEs and offers selected subjects as separate 9–1 qualifications, depending on subject and location. An A*–G entry does not automatically produce a numerical grade. Cambridge's grading guide explains how the scales line up at three anchor points:
| Anchor point | Meaning |
|---|---|
| Bottom of grade 7 | Aligned with the bottom of grade A |
| Bottom of grade 4 | Aligned with the bottom of grade C |
| Bottom of grade 1 | Aligned with the bottom of grade G |
These are reference points, not exact conversions for every result.
Written exams are marked externally; coursework and other school-assessed components follow each board's assessment and moderation rules. For linear courses, your final grade comes from the qualification's assessed performance, including any weighting. For Edexcel modular courses, unit raw marks are converted to a Uniform Mark Scale (UMS) before the overall award is calculated.
Important
Do not work out your final result by simply averaging paper percentages unless the specification confirms that method.
Linear vs modular International GCSEs
Pearson Edexcel offers modular alternatives for selected International GCSE subjects alongside its linear courses.
| Linear route | Modular route |
|---|---|
| Exams normally in the final series, subject to coursework arrangements | Unit exams can be spread across series |
| Revision prepares you for the final set of assessments | Revision can focus on the content for each unit |
| Retakes follow the qualification's specification | Individual units can be resat under Pearson's rules |
| No unit-by-unit cash-in | Unit results must be cashed in for the overall grade |
Before choosing modular, confirm that your subject has a modular version, your centre offers it, your teaching plan matches the unit specification and you understand the entry and cash-in process. Our full guide to Edexcel IGCSE modular vs linear explains the rules in detail.
Are Cambridge, Edexcel and OxfordAQA IGCSEs recognised?
All three offer established international qualifications used for progression to further study. OxfordAQA International GCSEs have been independently benchmarked by UK ENIC as comparable to the UK GCSE standard, and Pearson's linear and modular International GCSEs have been benchmarked by Ecctis in the same way.
But recognition does not mean every institution accepts every subject and route for every purpose.
| Your next step | What to check |
|---|---|
| Sixth form or college | Required subjects and minimum grades |
| University | Any GCSE-level Maths, English or science requirements |
| Proof of English proficiency | Accepted qualification, grade and speaking assessment |
| National qualification equivalency | Rules on subjects, award size, exam sittings and documents |
Note
IGCSEs normally form part of your academic record, but they do not replace the post-16 qualifications most undergraduate courses require. OxfordAQA's name also does not give applicants any preference for admission to the University of Oxford. For how IGCSEs compare with GCSEs, see IGCSE vs GCSE.
Which IGCSE exam board should you choose?
The best choice is the specific course you can access, prepare for properly and use for your next step.
| Your situation | Prioritise |
|---|---|
| Your school has already chosen the board | The right resources, the right tier and paper-specific practice |
| You can choose between schools or courses | Teaching quality, subject options, assessment routes and support |
| You are a private candidate | A confirmed centre that accepts your exact qualification and components |
| You want to spread exams across sittings | Availability of an Edexcel modular course |
| You are changing schools | A topic-by-topic syllabus comparison and a workable entry plan |
| You need admission or national equivalency | Confirmation of the exact subject, grade and route requirements |
Seven questions to ask before choosing
- What is the qualification and subject code?
- Which specification applies to my exam year?
- Can my tier award the grade I need?
- Which papers, coursework, practicals or speaking assessments must I complete?
- Can my school or centre enter me for every required component?
- What are the total exam and possible resit costs?
- Does this qualification meet my next course's requirements?
Key point
An unfamiliar board taught well may suit you better than a familiar board for which you have little support.
Can you switch IGCSE exam boards?
Switching can be possible, but it needs a clear plan. Topic overlap does not guarantee that you have covered the new specification, or that previous results can transfer. Before switching:
- compare completed topics against the new specification;
- identify missing content and different assessment skills;
- confirm the tier and compulsory components;
- check exam dates, centre availability and entry deadlines;
- find out whether any coursework or previous assessment can be used under the new board's rules.
Watch out
Do not assume you can take one paper with a new board and combine it with results from your previous qualification. Switching late in the course can mean a lot of extra preparation, so weigh that against the likely benefit.
How to revise effectively for your IGCSE exam board
1. Build a specification checklist
List the required content for your course and tier, and mark each item secure, needs practice or not learned yet. Use this to find gaps instead of repeatedly revising your favourite topics.
2. Learn each paper's rules
Record the duration, total marks, question types, calculator rules and compulsory sections. For English Literature, include prescribed texts and book-access rules; for science, identify where practical skills are assessed.
3. Use specimen papers after syllabus changes
Specimen papers show the intended format of a new assessment. Older papers can still provide useful questions, but check whether their topics, structure and tasks match your current course. Starley's past papers are organised by board and code.
4. Use mark schemes as feedback
- Maths: find missing steps, wrong methods and accuracy errors.
- Science: check terminology, application and experimental reasoning.
- English: judge how well your response meets the task and criteria.
Reading a solution is not the same as being able to produce it yourself.
5. Keep an error log and retry
Record the topic, your mistake, the correct approach and a date to retry. Redo the question without looking at the solution; if you can now explain the method or reasoning, the practice has worked.
6. Use other boards' resources selectively
A lesson on simultaneous equations or cell structure may help students across boards, as long as it covers the depth you need. For full timed mocks, prioritise papers that match your own qualification.
Frequently asked questions
What is the difference between Cambridge and Edexcel IGCSE?
It depends on the subject, and can include topic coverage, grading, tiers and exam structure. Cambridge Mathematics 0580 has non-calculator and calculator papers, while Edexcel Mathematics A 4MA1 allows calculators on both. Edexcel also offers modular alternatives for selected subjects.
Is OxfordAQA the same as AQA?
No. OxfordAQA is a partnership between Oxford University Press and AQA that offers international qualifications. Its International GCSEs have their own specifications and exams, so check AQA UK GCSE resources for alignment before using them.
Is Cambridge also called CIE or CAIE?
Students and older resources often use CIE or CAIE to mean Cambridge International. Confirm the syllabus code and exam year rather than relying on the abbreviation.
Which IGCSE board is easiest to get a grade 9 in?
There is no dependable board-wide answer. Compare your subject, tier, assessment format and available support. If you take a Cambridge A*–G qualification, its highest grade is A*, not 9. For aiming high, see how to get all A*s in your IGCSEs.
Does every Cambridge subject have Core and Extended papers?
No. Tiering is subject-specific. Cambridge Mathematics 0580 and Biology 0610 have Core and Extended routes, but check each syllabus separately.
Can I take subjects from different IGCSE boards?
Yes, schools and centres can offer subjects from different boards. Before finalising entries, check exam clashes, qualification overlap restrictions and any local equivalency requirements.
Can I take IGCSEs as a private candidate?
Many courses can be taken privately through an exam centre that accepts private candidates. Availability varies, especially for coursework, speaking and practical components, so confirm your centre and assessment route before paying for a course.
Should I change boards if I am struggling?
First identify the cause: missing content, exam technique, time pressure, tier choice or not enough support. Changing boards can introduce new topics and assessment requirements, so ask for a syllabus comparison before deciding.