What has been the most important school subject in your adult life?

[OneUmberJoker]

Maths

Drama and Eng Lit

Cycling Proficiency.
Biology.

English, maths and economics

English, maths and economics

Economics and Music

Design and Technology

Chemistry and biology

Hard to choose!
probably biology latin and english language, not necessarily in that order

For work, maths, also physics and English.

Thinking about it now my favourite lesson in secondary school was one that was kind of like PSHE (my school gave it a different name).
We did lots of sex education (including a lot about contraception/safe sex etc). Lots of group discussions about issues like abortion, AIDS and consent.
We also did team building exercises and those sociological discussions like "There's 20 people in a sinking ship but only space for 19 in the lifeboat - who gets left behind".
So really that was probably the most useful lesson.

Obviously need a grasp of the basics. But after that firstly maybe English and history, teaches you how to think critically. Then home economics, cooking and changing a plug are just essentials. After that biology, everyone probably needs a basic understanding of that.

History- critical thinking, evaluating sources, understanding there are multiple truths depending on who is telling the story.

Also Geography, which sparked a global curiosity which gave me my career.

History, both for subject content and analysis/ writing skills, maths for everything from baking to statistics, typing, and home ec.

Also Irish for the grammar - I still translate grammatical terms from Irish to English in my head as I never learned English grammar explicitly, but it was taught explicitly and in excruciating detail in Irish.

(Typo)

Maths (algebra and problem-solving in particular) and English are a given. History, for the reasons other people have mentioned. It gave me an understanding of the world around me, and taught me to evaluate my sources. Languages too, although I have no great talent and didn't study them after GCSEs. I'm sure it's helped me in software engineering, where you have to get to grips with the 'grammar' of the development language.

I think I probably learned more English grammar when I took French at O and A level.

Wow - in my many years of teaching, I've rarely encountered a student who likes PSHE. Most of them absolutely hate it! They find all the topics either boring or deeply cringeworthy!

Latin, it has made it easier for me to learn other languages and also to understand a lot of unusual words in English. I think that has widened my knowledge in general

Art
English

Yes, MFL teachers often have to explain the English equivalents of foreign grammatical structures in order to get students to properly understand them! It got a little bit better after the new, very unpopular SPaG SATs came in. Then at least kids arrived at secondary school knowing what nouns, adjectives and adverbs were!

The hardest tends to be the passive voice. They use it in English all the time without knowing what it is, how it works or realising they are using it!

Games

I learned the art of subterfuge skiving swimming, lacrosse, netball, tennis and athletics.

English language.
Latin.
Religious studies. You can’t possibly understand the history of England or Europe without having a good understanding of Christianity.

I did a one year "O" level in first year sixth form called something like Principals of Accounting -was basically bookkeeping ans as an accountant gave me a head start on my professional exams.
A 10 week add on in touch typing the same year became very useful once computers invaded the workplace.

It was generally considered the "doss" lesson because there was no written work or exams for it.

Also came here to say Latin, surprised and pleased so many others think the same. I managed to persuade one of my DC to take Latin GCSE.
It's such a shame it's dying out. My kids school still offers it but there's a tiny handful each year doing the GCSE and it's rare for anyone to do the A level.
after that it'd be Biology or science in general. I did human biology at the OU and a degree in Physics and being scientifically literate is enormously useful in everyday life.

Latin, too! It's been so useful so many times throughout the years. I'm now in my mid-fifties. Other than that, Maths, Eng Lang, Physics and Chemistry in terms of usefulness. Eng Lit and French in terms of contributing me having a happy life.

Honestly none of them were really useless, apart from maybe geography.