I loosely agree with you OP. There is a huge amount of crap I learned in school that has only ever been used during games of Trivial Pursuit or to make random conversation. (Me: "Did you know that down the road from this pub, there was a huge battle fought during the Wars of the Roses, it was a major turning point for the House of York?" First Date: Goes to toilet, escapes out of window)
That said, In my previous career I used a lot of maths, a lot of the time. Luckily I always enjoyed algebra! I HATED my maths teacher, but I loved the equations. 😘
I think the main problem for me with the current system is that the kids who are "average" (not in an insulting way, just that their capability is within a normal range) fare the best, the kids who struggle REALLY struggle and often just end up not even trying because of lack of support from the teacher/at home. And the kids who could really excel just end up bored because they're so sick of waiting for everyone else to catch up.
I remember in either a French or Spanish lesson, someone was struggling through reading aloud a few paragraphs of text "To the class" (Do they still do this? I had several sadistic teachers who would pick on people as a punishment and humiliate them in front of their classmates. Wankers) and I'd drift off after the first couple of sentences and just start reading forward through my textbook. Vive La Rochelle! Quel suprise, another letter from my pen friend!
The teacher saw I was turning pages and snapped "Ford, why aren't you paying attention?" I said Oh I am but I'm on page 34. Bitch then told me to read the rest of the piece, which the kid she originally picked on was extremely grateful for. I read it tout suite and parfait and then stared her out, which for me age 12 was what the kids these days would call a mic drop.
In a perfect education system, she would have noticed that I had a gift for languages and recommended me some reading material that would stretch me, or some French films that she could have challenged me to watch with the subtitles off. It was a big school - over 2000 pupils - surely with the right funding they could have run out of hours clubs for every subject.
At "Options" time I was pushed really hard by teachers into taking what was called "Triple Science". This was basically taking 3 subjects (Physics, Chemistry, Biology) in the timetable space of two. I had wanted to take Art, Media Studies and Biology but was basically browbeaten into dropping that and just taking the 3 sciences. If I had taken media I do feel I'd have gone on for A level and uni.
As it was, I did my GCSEs, got 7 As and 2 Bs, and then dropped the fuck out. I was sick of grinding in things I didn't enjoy. Once I'd had a taste of freedom after my GCSEs - a job and money - I was "like fuck am I going back to education."
My DS is the flip side of that story. He has dyslexia and dyspraxia. He hated every minute of his education in numerous different establishments apart from SCIENCE. He loved science, I suspect simply because his teacher was so enthusiatic and supportive. But my god, he'd have been better served with a more practical curriculum. He came into my life (and then in and out) when he was 5 and I know full well he would be functionally illterate right now if I hadn't made it a priority to read with him every night. Even when his birth dad took back custody for a couple of years, I spoke to DS every day on the phone and used to buy two copies of books (Horrible Histories was the bomb for getting him interested), send one to him, and we'd read on the phone every night.