And as time goes on, jobs become ever-more specialised. In Scotland, we make our first pick of subjects at 13ish. Pick the wrong subjects then, and your choices at 15ish are limited. Those in turn limit your choice of degree. And with so many jobs requiring a degree (and not just any degree, but something 'relevant') the wrong pick can really set you back. In all cases it's possible to retrain or change direction... but it's a whole bunch of extra time, when you may need to be making money on which to live.
This part intrigues me. Is school in Scotland that restrictive?
At least for me, here in the US, I went to a small school out in the sticks. Any computer skill I learned, I got from self-study at home. Providing I graduated, the classes I took had no bearing on what I could take/do in college. At best, high school influenced how well I scored on placement tests to be able to skip some math or english classes. I went to a small university and got my BS, and was recruited in college by a major tech firm (not a .com startup) with a plain 3.0 GPA.
So at least from my experience, there's not a huge lock-in on what you do in school, providing you're not stupid, get decent grades, stay out of trouble.
But you do need to be figuring out what you want to do by the time you graduate HS. I spent my free-time doing computer stuff, so when I hit college, I had a major I was going to stick with and excel at.
I suspect some of the problem is kids are hitting college without that sense of career plan. The people who took a degree and got work in it are pretty much doing well. The people who didn't lock in on a degree early seem to flounder. Anybody who took a fuzzy degree (something not obviously tied to a hard science/career like chemist, biologist, engineer) also tended to suffer as the job market isn't gentle on non-science/engineering degrees.
Given that companies like Exxon are hiring like gang-busters, anybody insisting on not getting a technical degree (computers, chemistry, geology, engineering) is risking wasting their money on a degree so they can make coffee at Starbucks.
That's a mantra of dad's across time to their kids who are proposing spending the money on an Russian Literature degree. But it holds true. Go where the money is.