What is a 9 in IGCSE?

A grade 9 is the highest grade you can earn in the numerical 9–1 IGCSE system. It's designed to sit above the old A*, singling out the very strongest performances. If you're aiming for one, it helps to know what it actually takes, why the target percentage moves around, and what kind of revision genuinely gets students there. Here's an honest look.

Where the 9 sits on the scale

In the 9–1 system, grades run from 9 at the top down to 1, with U (ungraded) below that. A 9 isn't just "an A* renamed" — the scale was deliberately spread out at the top so that a 9 marks out a smaller, higher-achieving group than the old A* did. In other words, the ceiling was raised: the top grade now separates the best from the very best.

How a 9 compares to an A*

On the legacy A*–G scale, A* was the top grade. When subjects moved to 9–1, the top band was split: the standard for a 9 was set higher than the old A*, while a grade 8 covers much of what the old A* range used to. So a rough mental model is:

• Grade 9 — above the old A*; the top performances only.
• Grade 8 — overlaps the upper part of the old A*.
• Grade 7 — lines up roughly with the old grade A.

That's why earning a 9 feels harder than earning an A* once did — because, by design, it is.

Roughly what percentage do you need?

There's no single fixed figure, and anyone who quotes you an exact number for every subject is guessing. As a very rough guide, grade 9 boundaries often land somewhere in the region of the mid-80s to mid-90s in percentage terms — but this genuinely varies by subject and by session. Some subjects and some easier papers push the 9 boundary higher; a harder paper pulls it down.

The reason is simple: boundaries are set after marking, to keep the standard steady year to year. So the safest way to think about a 9 is "consistently in the top band across several past sessions", not "exactly 90%". To see real figures for your subject, check the published grade boundaries or use the grade-to-percentage converter, which shows the percentage each grade needed in a given series.

How rare is a 9?

A 9 is meant to be uncommon. Because the top band was deliberately narrowed, only a modest share of entries in any subject reach it — it identifies exceptional performance rather than simply "very good". The exact proportion differs from subject to subject, so rather than chase a headline statistic, treat a 9 as a stretch target that rewards genuine mastery of the whole syllabus.

How to realistically aim for a 9

Students who reach grade 9 tend to do a few things in common, and none of them are secrets:

• Cover the whole syllabus, not just favourites. A 9 leaves almost no marks on the table, so the topics you avoid are exactly the ones that cap your grade.
• Master exam technique, not just content. Learn the command words ("describe", "explain", "evaluate"), how many marks each earns, and how mark schemes award them. Knowing the answer isn't the same as writing it the way the marker rewards.
• Do past papers under real timing. Then mark them yourself against the official mark scheme. This is the single most reliable way to find the specific marks you're dropping.
• Turn mistakes into a list. Keep a running note of errors and revisit them. Grade 9 comes from closing small, repeated gaps, not from re-reading things you already know.
• Check against several sessions. Because boundaries move, aim to clear the 9 line comfortably in more than one past series, not just the easiest one.

Track your progress with real numbers

The best motivation is watching the gap close. Mark your past papers, then put your scores into our IGCSE grade calculator: it combines your components, applies real boundaries and tells you which grade you'd land — and how many marks separate you from a 9. Do that across a few papers and you'll know, honestly, whether the top grade is within reach and exactly where to aim next.

Independent study tool. Not affiliated with, endorsed by, or connected to Cambridge Assessment International Education or Pearson Edexcel. Grade boundary figures are sourced from official releases; always confirm with your exam board.