What Is IGCSE? Meaning, Grading and Structure Explained

IGCSE stands for International General Certificate of Secondary Education: a two-year qualification for 14- to 16-year-olds, awarded mainly by Cambridge International and Pearson Edexcel, and sat by students in international and independent schools around the world. It occupies the same stage of schooling as the GCSE taken in England, and its subjects, papers and grading scales are built to sit alongside it.

If your child has just been handed a subject-options form with "IGCSE" printed across the top, or you're trying to work out whether a grade on a transcript means what you think it means, this guide covers what the qualification actually is, who runs it, how it's graded, and how the two-year course is structured — with links through to the specifics: choosing subjects, the curriculum in more depth, and the English writing skills (article and summary writing) that come up most often in search.

What IGCSE stands for, and who awards it

IGCSE is not one single exam board's product — it is a qualification TYPE that two boards award under their own syllabuses. Cambridge International (part of Cambridge University Press & Assessment) calls its version "Cambridge IGCSE" and describes it as the world's most popular international qualification for 14 to 16 year olds, offering a choice of over 70 subjects in any combination. Pearson Edexcel awards "Edexcel International GCSE", available in 37 subjects and studied in over 80 countries, and markets it as equivalent, grade for grade, to the GCSE taken in England.

Both qualifications were designed from the outset for schools outside England — international schools, British curriculum schools abroad, and some independent schools within the UK — rather than for the state-school system England's own GCSE serves. That is the practical difference behind the name: it is an "international" GCSE because it was built for an international cohort, not because it is a lesser or unofficial version of the domestic qualification.

How IGCSE differs from GCSE

England's Department for Education stopped counting international GCSEs in state secondary school performance tables once the corresponding reformed 9–1 GCSE became available for that subject, from 2017 onwards — which is why, by 2018, 94% of international GCSE entries in England came from independent (fee-paying) school pupils rather than the state sector. That does not make IGCSE a weaker qualification; it makes it the wrong fit for a state comprehensive built around the reformed English GCSE specifications, and the right fit for an international or independent school. Ofqual, the qualifications regulator, has also said that because GCSEs and international GCSEs are not the same qualifications, their grading standards are not guaranteed to align — in 2018, some Cambridge IGCSEs were Ofqual-regulated, but almost all Pearson International GCSEs were not.

A 2018 Department for Education analysis — of independent-school pupils in England, the one population large enough to compare both qualifications directly — found Cambridge IGCSE grades averaged within a tenth of a grade of GCSE grades in the same subject, and Pearson International GCSE grades averaged about a quarter of a grade higher. Both findings describe that specific pupil group in that one year, not IGCSE takers worldwide, so treat them as a data point on how close the two are, not a universal guarantee.

How IGCSE is graded: A*–G and 9–1

Cambridge IGCSE is graded A* to G worldwide by default. Schools in what Cambridge calls "administrative zone 3" — which includes schools in England — can choose 9–1 grading instead, introduced from June 2017 to line up with the reformed English GCSE, but every school can also keep A*–G if it prefers; Cambridge is explicit that once a school enters candidates under one scale for a syllabus, it cannot switch to the other after the entry deadline. Pearson's International GCSE, by contrast, has moved over to the 9–1 scale as standard, having previously used an 8-point A*–G scale.

The 9–1 numbers are not just a relabelling of A*–G. For England's own GCSEs, the exam regulator and awarding bodies define grade 4 as a "standard pass" and grade 5 as a "strong pass" — a distinction UK sixth forms and colleges use when setting entry requirements. Pearson's International GCSE uses the same nine-point scale, in the same order, but that specific standard-pass/strong-pass labelling is a UK domestic policy setting, not something either board applies internationally — so a 9–1 grade on an International GCSE transcript is comparable to a UK GCSE grade, without necessarily carrying that exact label outside England.

How the two-year course is structured

IGCSE is not one fixed timetable — each school builds its own two-year programme, usually across Year 10 and Year 11, from the subjects the board offers. Neither Cambridge nor Pearson Edexcel publishes one universal list of compulsory subjects; each school sets its own core (in practice, English and Mathematics are compulsory almost everywhere, and most schools also require at least one Science) and then lets students choose the rest from optional groups. Most students end up taking eight to ten subjects in total, including that core.

Assessment is mostly by written exam sat at the end of the two-year course, externally marked by the board rather than by the school. Some subjects add other components: Cambridge IGCSE First Language English (0500), for example, lets a school choose between a second written paper or an internally assessed coursework portfolio of three extended assignments, and offers an optional, separately endorsed Speaking and Listening test that does not count towards the overall grade. The mix of components varies subject by subject, so the honest answer to "how is IGCSE assessed" is: check the specific subject's syllabus, not a generic rule.

Exam timing follows the board's own calendar rather than a single global date. Cambridge 0500, for example, is sat in the June and November series everywhere, with an additional March series for centres in India only — so "exam season" for an IGCSE student can genuinely mean one of three different points in the year, depending on where the school sits candidates.

What subjects are on offer

Between the two boards, IGCSE covers most of what a Year 10–11 timetable needs: English (as a first or additional language), Mathematics, the sciences, humanities and social sciences, modern languages, and a range of creative and vocational subjects. Which specific subjects a given school offers depends on that school, not the board — start with the two board hubs below, which each link on to their own subjects, syllabuses and past-paper guidance.

Is IGCSE the right fit?

That question is really a school question, not a qualification question: IGCSE is the right fit if your child's school teaches it, because the timetable, the teachers and the exam entries all follow from that. Where families do have a genuine choice — moving countries, choosing between an international and a national curriculum school, or picking a board where a school offers more than one — the practical differences are subject availability, grading scale (A*–G vs 9–1) and how the receiving country's universities read the result, all covered above.

• Ask the school which board (Cambridge or Edexcel) and which grading scale (A*–G or 9–1) it enters students for.
• Check the compulsory core against your child's intended A Level or university subjects before options are finalised.
• If a specific university or sixth form matters, confirm directly with them how they read an IGCSE grade — do not assume.

Whichever board or grading scale a school uses, the two-year course rewards the same things: steady work across both years rather than a late cram, and regular practice against the specific question types each subject's papers actually ask. A tutor who already knows the Cambridge or Edexcel syllabus your child is following can turn that generic advice into a plan for their specific subjects and papers — which is where TutorWick's study plans and one-to-one tutoring come in once the subject choices below are settled.

Is IGCSE harder than GCSE?

Neither board publishes a difficulty comparison, and content and demand are close enough that universities generally treat the two as equivalent at the same grade. Anecdotal comparisons circulate, but there is no verified board-level ranking of one as harder than the other.

Can a student take both Cambridge IGCSE and Edexcel International GCSE?

Yes — nothing stops a student sitting subjects from both boards, though most schools standardise on one board per subject area for timetabling reasons. Check with the school which board it enters each subject under.