How do GCSE grade boundaries work?

[letsomebodygo]

Say you take paper 1 and paper 2. If you do brilliantly on paper 1 but badly in paper 2, can you still get a great grade. Or do you need to get above a certain score on each paper to be allowed certain grades?

Each paper will be worth a % of the overall. Therefore, you can do better in one than the other and it doesn’t ruin the result, in the sense there is no requirement to perform equally in the papers.

Boundaries are set after the papers are set and marked. They are set so that a % of students achieve each grade. It is to avoid grade inflation over time.

Therefore, because for example 78% got a L8 last year, you can’t be sure 78% will get a L8 this year. The paper might be easier and people achieve higher marks, so the boundary might rise to 81%. Usually, boundaries don’t change hugely year-to-year. Because of 2 years of Covid grades without exams, it’s hard to know where to benchmark against. 2019 is the last exam year and the gov have talked about taking 2 years to return to those standards.

Obviously you’re more likely to get top grades if you do well in all papers, but it’s very common for someone to do better in one and not totally unusual for someone to bomb out on one paper and recover in the other. If you got pretty much 100% in one and then bombed in another and just scored perhaps 30%, a reasonable pass could still be possible as you’d be averaging 65%.

AFAIK all GCSEs consider total marks across all papers.

This is particularly relevant in combined science where you can be very poor in one science but get a good overall mark based on being very good in another science.

Yes what @WombatChocolate said. This is also relevant in my subject (MFL) where it's not unusual for a student to be much stronger or weaker in one discipline (some really struggle with listening for example). Theoretically you could score zero on the listening paper and still gain 75% (if you scored 100% on every other paper). Unlikely, obviously. But more realistically, 65% on reading, speaking and writing and 35% on listening would have averaged out to a grade 6 in German in 2019.

Thanks for explaining this so well.