They seem to learn everything quite a bit later here, and there is more dancing around the topics rather than just getting to work and learning them.
Interesting, I've found it to be the opposite - I have young cousins in the US (age 8-13) and they seem to have learned everything much later than my brothers and I in the UK... we learned to read at age 4-5, while my cousins in the US did not learn to read until age 7 (the youngest is still struggling with her reading).
Then you've got GCSE's (age 16) which are considered the same level as a US high school diploma (age 18), while A-levels are considered approximately equivalent to an Associates Degree or university-level classes in the US.
I did a year abroad in the US as part of my undergrad degree and I went straight from second year university courses in the UK to fourth- and fifth-year classes in the US. I also took a first-year Astronomy class as an elective and they were teaching stuff that I had been helping my little brother with for his Year 9 SATs :S (the final exam in that class was a 15-minute multiple choice test, in which some of the answer options were obvious jokes... for example, What is a Meteor Shower? option c) What you have after your meteor breakfast).
Four years later, I taught undergraduates in the US (Environmental Science) and the stuff I was covering in their university-level class was what I had learned in Year 9-10 in the UK... I actually had a student in one class who believed that a kilometre was equal to 100 m, and other students who had never heard of sedimentary, metamorphic or igneous rocks, or the water cycle, or the carbon cycle (which from what I remember are all taught at KS3 in the UK, if not earlier).
Having been an employer for many years, I have also noticed the education issue from this viewpoint as well. In the 1990s university graduates were fine, but from around about 2000 the graduates started coming to us with a serious lack of basic skills (regardless of how good they looked on paper) and it was a big problem for us.
I agree to some extent that basic skills are not taught as well in the UK - I do think they should be more rigourous with teaching the basic skills here. I stopped taking English after GCSEs and I wasn't taught about sentence structure or anything... I still have no clue which type of word is a noun, which is a verb etc. - I understand when sentences and words are used correctly, but I could not break them down to explain why they are correct.
I didn't have to write any essays in my degree, other than my dissertation, so I came out of undergrad having no clue how to write an essay, how to reference properly, how to conduct a literary review etc.
The biggest issues I personally have noticed have been with English and maths, but I have heard from different sources that only kids with scientist parents can get good enough grades in science subjects to study these at university.
I don't believe that to be the case - I'm a scientist (I left school in 2001), but neither of my parents is one.
My mum does have a degree in maths, but she has never used her degree in her working career, and my dad didn't go to university but got an English teaching qualification, which he didn't use, and now he works as a drummer and music teacher (he goes round local schools and teaches kids how to play the drums). He knows nothing about maths or science (he gave up both after O-levels/GSCEs) - I usually have to explain those things to him
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Despite this, I got double-A* in GCSE Science and an A in GCSE Maths, an A and a B in A-level Physics and Maths, respectively. I also have an MPhys degree in Theoretical Physics, an MSc by Research in Science of Natural Hazards, I completed 8 months of a US PhD in Geodynamical Modelling, and I now work as a Meteorologist for the UK government/military.