So how do you square that with the fact that a lot of secondary education is not remotely "useful" for most jobs? The most common argument I've heard for unive

So how do you square that with the fact that a lot of secondary education is not remotely "useful" for most jobs? The most common argument I've heard for universal secondary education is that some amount of liberal education is necessary for a functioning democracy. Which I think is definitely true, and the only question is where to draw the line. It's clear to me that we shouldn't draw the line prior to literacy and basic numeracy, but it's not clear why the current position of the line -- right between secondary and higher education -- is more meritorious than any other position.