IGCSE Grade Boundaries June 2026 — Official Cambridge Thresholds (Edexcel 20 Aug)
The June 2026 Cambridge IGCSE grade thresholds are published. They went live with results at 06:00 UK time on Tuesday 18 August 2026, and the tables below are the official numbers for the most-taken subjects. Pearson Edexcel follows with its International GCSE boundaries on Thursday 20 August, and this page updates again that morning.
- Cambridge thresholds: published — 88 subject tables went live at 06:00 UK on 18 August. The most-taken subjects are collected below. Edexcel International GCSE: 20 August.
- Read the row, not the subject. Cambridge publishes a threshold per entry route — the exact combination of papers you sat. In Maths 0580 this June, two Extended routes sat 15 marks apart for the same A*.
- Boundaries mostly rose this year: across 79 comparable A* routes, 53 went up and 22 went down. The full 2026-vs-2025 comparison is here.
- The number that matters isn't the boundary — it's your distance from it: 1–2 marks below means a remark is worth considering; further means the November retake (entries close 12–21 September).
- New to how thresholds work? Read the full grade-boundaries explainer first.
When the June 2026 boundaries came out
Cambridge IGCSE June 2026 grade thresholds
Official minimum overall marks for the top grades in the June 2026 series, taken directly from the published Cambridge threshold tables. Each row names the entry route it belongs to — the combination of components sat — because that is how Cambridge publishes them, and a different route in the same subject can carry a materially different line.
| Subject (syllabus) | A* | A | B | C |
|---|---|---|---|---|
| Mathematics (0580) papers 21, 41 · out of 200 | 162 81% | 138 69% | 114 57% | 90 45% |
| Physics (0625) papers 21, 41, 51 · out of 200 | 162 81% | 137 68% | 112 56% | 88 44% |
| Chemistry (0620) papers 21, 41, 51 · out of 200 | 173 86% | 147 74% | 119 60% | 91 46% |
| Biology (0610) papers 21, 41, 51 · out of 200 | 165 82% | 137 68% | 109 55% | 82 41% |
| English First Language (0500) papers 11, 21 · out of 160 | 116 72% | 103 64% | 90 56% | 78 49% |
| English Second Language (0510) papers 11, 21 · out of 150 | 143 95% | 137 91% | 128 85% | 119 79% |
| Economics (0455) papers 11, 21 · out of 150 | 118 79% | 102 68% | 86 57% | 71 47% |
| Business Studies (0450) papers 11, 21 · out of 160 | 95 59% | 80 50% | 65 41% | 50 31% |
| ICT (0417) papers 11, 21, 31 · out of 280 | 197 70% | 171 61% | 145 52% | 119 42% |
| Computer Science (0478) papers 11, 21 · out of 150 | 117 78% | 93 62% | 69 46% | 46 31% |
| Additional Mathematics (0606) papers 11, 21 · out of 160 | 141 88% | 122 76% | 92 57% | 62 39% |
| Arabic Foreign Language (0544) papers 03, 11, 21, 41 · out of 200 | 169 84% | 146 73% | 123 62% | 101 50% |
Your subject isn't in the table above
Cambridge published 88 IGCSE threshold tables for June 2026, one per syllabus, covering everything from Accounting 0452 to World Literature 0408, plus the full 9–1 graded set (0970 Biology, 0971 Chemistry, 0972 Physics, 0980 Mathematics and the rest). They are all on cambridgeinternational.org under the June 2026 grade threshold tables, filed by syllabus name and code. Find your syllabus code on your statement of entry first — it is the four digits that make the search unambiguous.
What actually happened to the boundaries this year
They mostly went up — which is the opposite of what was widely predicted through June. We compared every A* entry route that appears in both the June 2026 and June 2025 tables on identical terms, across the 14 most-taken syllabuses:
Physics 0625 rose on every extended route, by 11.8 marks on average. Business Studies 0450 was the only subject down on average. Biology 0610 managed both at once — one route up 15 marks, another down 7 — which is the clearest possible demonstration that there is no such thing as "the 2026 boundaries" as a single fact. The full subject-by-subject comparison is here, with the method.
A rising boundary is not a sign that marking got harsher. Thresholds are set after marking, from the actual scripts, so that a grade means the same thing every year: an easier paper pushes the line up, a harder one pulls it down. That is also why nobody could have told you these numbers in June, and why petitions to lower them have never moved one.
Edexcel International GCSE June 2026 boundaries
Status: publishing Thursday 20 August 2026. Edexcel grades 9–1; boundaries are published per subject as PDFs. We'll summarise the most-taken subjects here (Maths A, the sciences, English, Business) the same morning.
The moment you have your results
- Find your route's threshold aboveMatch the paper numbers on your entry, not just the subject name — then ask your exams officer for your exact marks per component.
- Compute your distanceMarks above the boundary = safe. 1–2 below the next grade = remark territory (deadline ~20 September). Further = decision time.
- If a grade needs fixing, move fastNovember retake entries close 12–21 September — and school/British Council cutoffs come earlier. The resit guide has the full playbook, and the results-day guide the whole decision tree.
FAQ
Are the June 2026 IGCSE grade boundaries out?
Where can I find the official grade thresholds?
Were the June 2026 boundaries higher or lower than 2025?
What percentage was an A* in June 2026?
Why does my subject have more than one set of boundaries?
What should I do if I'm 1 or 2 marks below a boundary?
Come back on the 20th for the Edexcel International GCSE numbers. And keep the quiet truth about boundaries in view: they only feel like a lottery to candidates who prepared without margin. This June, one line moved sixteen marks — for a student sitting comfortably clear of it, that was a piece of trivia rather than a result. Whichever way the lines land next series, the November window and a marked-practice buffer mean you're never more than one well-prepared sitting away from the grade you need.
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