Question 1

What are Edexcel IGCSE GCSE Chemistry grade boundaries?

Accepted Answer

Grade boundaries are the minimum raw marks you need for each grade in Edexcel IGCSE GCSE Chemistry (specification 4CH1). Edexcel IGCSE sets them once marking is complete for the whole cohort: senior examiners review evidence from the exam series, compare performance with previous years, and recommend where each grade boundary should sit.

The boundaries move a little from year to year, because every paper is a slightly different test. If a paper is harder than usual, the boundaries come down. If it's more accessible, they nudge up. The aim is that a grade represents the same standard whichever year you happened to sit the exam, even though the raw mark needed will vary between series.

Question 2

Why do the Edexcel IGCSE Chemistry boundaries change every year?

Accepted Answer

Because every paper is a slightly different test. Once marking is complete, senior examiners at Edexcel IGCSE look at how the cohort performed against previous cohorts and evidence from senior marking, then set boundaries so that a grade means roughly the same standard year on year.

A boundary shifting down doesn't mean the subject got easier or the cohort got weaker; it usually means the paper was slightly harder to score marks on than the previous year, and the boundary moved to compensate. This is why you shouldn't fix a specific mark in your head as 'the 9': aim for the top end of the range and you'll comfortably clear whichever boundary lands.

Question 3

When are the Edexcel IGCSE GCSE Chemistry grade boundaries published?

Accepted Answer

Edexcel IGCSE normally publishes GCSE grade boundaries at 8am on GCSE results day, alongside the grades themselves. They land as one large PDF covering every GCSE subject that series.

We update this page shortly after Edexcel IGCSE releases the boundaries, so you can look up your total against the fresh boundaries and see what grade it would have earned.

Question 4

What mark do I need for a grade 9 in Edexcel IGCSE GCSE Chemistry?

Accepted Answer

It depends on the year, because Edexcel IGCSE sets the boundaries once the cohort has been marked. In recent series, the grade 9 boundary for Edexcel IGCSE GCSE Chemistry has typically landed around 70-75% of the maximum marks, but the exact percentage varies year to year.

For revision, aim to comfortably clear the top-end of that range on past papers rather than fixing a specific mark. That way you're insulated against a year when boundaries shift up.

Question 5

How should I use these boundaries when I'm revising?

Accepted Answer

There are two ways worth building into your routine.

**Score your past papers realistically.** Sit a paper timed, mark it against the official mark scheme, then check your total against the boundary for that year. That gives you a much clearer sense of where you really are than a rough self-estimate.

**Focus your revision on weaker topics.** If you're consistently landing 5-10 marks short of your target grade, work out which topics those marks are being dropped on. A [Edexcel IGCSE Chemistry revision course](https://cognito.org/courses/gcse/chemistry/edexcel-igcse) can help you plug the specific gaps rather than re-revising what you already know.

Question 6

Can I use Cognito for Edexcel IGCSE GCSE Chemistry exam practice?

Accepted Answer

Yes. Our [GCSE Chemistry (Edexcel IGCSE) course](https://cognito.org/courses/gcse/chemistry/edexcel-igcse) covers the whole specification with concise notes, quizzes and full past papers. You can score your attempts against the mark scheme and cross-reference your totals to the boundaries on this page.

If you're closer to results day, our [past-papers library](https://cognito.org/past-papers) has the full set of Edexcel IGCSE papers so you can time yourself against the real thing.

Question 7

Which Edexcel IGCSE GCSE Chemistry exam series are covered on this page?

Accepted Answer

This page covers every published Edexcel International GCSE Chemistry (specification 4CH1) grade-boundary release we can source from Pearson. At time of writing that includes the Nov 2025, Jun 2025, Nov 2024, Jun 2024, Nov 2023, Jun 2023, Jan 2023, Jun 2022 and Jan 2022 series. Pearson discontinued the January series after Jan 2023 and replaced it with a November series from Nov 2023.

Boundaries are shown per paper-option variant, because Pearson sets a separate boundary table for each combination of papers you can sit (for example the mainstream papers, the 'R' regional variants, and any 'C' cash-in combinations). Match your paper combination to the tier when you're checking a total from a past paper.

Series	Max	Grade 9	Grade 8	Grade 7	Grade 6	Grade 5	Grade 4	Grade 3	Grade 2	Grade 1
Nov 2025Latest	180	136	114	92	79	67	55	43	32	21
Jun 2025	180	151	134	117	104	91	79	62	45	29
Nov 2024	180	155	135	115	100	85	71	55	40	25
Jun 2024	180	146	127	109	96	83	70	55	41	27
Nov 2023	180	147	125	103	88	74	60	47	34	21
Jun 2023	180	145	123	101	87	73	59	46	33	21
Jan 2023	180	142	119	97	82	67	52	41	31	21
Jun 2022	180	140	117	95	80	65	51	41	31	21
Jan 2022	180	136	116	97	78	59	40	30	21	12

GCSE Chemistry Edexcel International GCSE (Pearson) Grade Boundaries

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