Edexcel IGCSE grade boundaries 2025: the June 2025 International GCSE boundaries for every main subject (Mathematics A Foundation and Higher, Mathematics B, Physics, Chemistry, Biology, Double Award Science, English Language A and B, English Literature, Business, Economics, Computer Science, History, Geography), the marks for each grade out of the paper total, what the R papers are, how boundaries are set and why they move, how to use them to predict a grade from a mock, and a printable table (free PDF)

"Edexcel IGCSE grade boundaries 2025" is searched twice a year: in August and January when results come out, and all through the spring by students marking mocks and trying to turn a mark into a grade. Pearson publishes the boundaries as one PDF per series with hundreds of rows, which is accurate and unreadable. This page gives the June 2025 boundaries for the main subjects in one table each, what the R papers are, how the boundaries are set, and how to use them with a mock, with a printable table.

Download the Edexcel IGCSE June 2025 grade boundaries table (PDF) (every main subject with the mark for each grade and the percentage, the R papers, and a mock-mark worksheet; two pages, free).

The figures below are from Pearson's "Grade boundaries, June 2025, International GCSE" document, subject (cash-in) level, standard papers unless stated. Boundaries are the minimum mark for the grade.

Mathematics

Read the Higher row carefully: a grade 4 was 44 of 200, 22 percent, and a grade 9 was 172, 86 percent. That is the shape of a Higher tier paper everywhere: it is written to separate 7s, 8s and 9s, so the lower grades sit at low marks. A grade 3 is available on Higher (32) as a safety net; below it is unclassified, which is why a student likely to score under 60 is safer on Foundation, where a 5 is the top grade and needed 150.

Sciences

The regional papers: Physics 1PR/2PR 9 at 142 and 4 at 73; Chemistry 1CR/2CR 9 at 154 and 4 at 81; Biology 1BR/2BR 9 at 144 and 4 at 67.

Science Double Award (4SD0), papers 1B, 1C, 1P, out of 330, gives two grades: 9-9 at 257, 9-8 at 242, 8-8 at 227, 8-7 at 213, 7-7 at 199, 7-6 at 187, 6-6 at 176, 6-5 at 165, 5-5 at 154, 5-4 at 143, 4-4 at 132, 4-3 at 120, 3-3 at 108, 3-2 at 96, 2-2 at 84, 2-1 at 72, 1-1 at 61.

English

The coursework routes (paper 03 is the coursework unit) have higher boundaries because coursework marks run higher than exam marks; the standard is the same.

Humanities, business and computing

What the R papers are

Pearson sets a regional version of most papers so that a paper sat in one time zone is not seen before it is sat in another. The R papers are different questions at the same standard, with their own boundaries, which is why the two rows differ by a few marks. A school's region decides which version its candidates sit; a candidate never chooses, and the grades are equivalent.

How the boundaries are set, and why they move

Boundaries are set after the papers are marked, by senior examiners who look at scripts at the key grades against the previous years' standard, supported by statistics on the cohort. The aim is that a grade 7 in 2025 means the same as a grade 7 in 2024, so if a paper turns out harder, the boundaries drop. That is why the Mathematics A Higher 9 was 172 in June 2025 and a few marks different in other series, and why no one can give you "the" grade 9 percentage for a subject: it is set after the exam, not before. Boundaries for the October to November and January series are published with those results and are usually a few marks lower, because the paper is different and the cohort smaller.

How to use them with a mock

1. Mark the mock with the real mark scheme (the examiner reports and mark schemes for every past paper are free on Pearson's site), strictly.
2. Add the paper totals to the subject total (both papers for maths and sciences; the max mark in the tables).
3. Read the total against the June 2025 row for the same tier and papers, allowing five marks either way.
4. Within five marks of a boundary: on the line, and the next topic fixed decides it. Ten or more above: secure. Ten below: the grade below.
5. For Mathematics A, the tier decision: a student scoring under about 60 of 200 on Higher mocks in the spring is safer on Foundation, where the same knowledge scores a 4 or 5 with room to spare.

The printable has the tables with a column for the mock marks.

Where to get help

A 1-on-1 online class for IGCSE maths, physics, chemistry, biology and English with tutors who teach Edexcel International GCSE to the mark scheme: past papers marked to the examiner's standard from the first term, the mock read against the boundaries, the tier decision made on evidence, UK after-school and Gulf and Asian evening hours, every class recorded, £8 to £10 an hour. The free 30-minute first class is a real lesson on the topic the student is on. What IGCSE is and how it compares is in IGCSE vs GCSE, and the GCSE equivalents in the GCSE pass mark.

Download the Edexcel IGCSE June 2025 grade boundaries table (PDF)

Questions parents ask

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