What jobs have natural job security? Either you’re protected by a union, a professional association, or having a rare and valuable skill set. The unions have been busted, professional associations are exclusive by their nature and most people definitionally do not have rare and marketable skills. As a result, an increasingly large fraction of jobs are gig work, part-time, or on contract. That includes work in law and software engineering. Precarity is the natural state of an unregulated, de-unionized job market and it is not a bug but a feature. It has little to do with our public schools.

Massive deindustrialization is a huge part of it in the US. There aren't many decent blue collar jobs anymore.

> Are public schools so bad that people come out with no marketable unique skills that would give them natural job security?

Yes, but that's not the only issue. Some people are incapable of managing their own affairs. Showing up to work on time, not drunk is not in their personal capacity. It's not really their fault; we are not the authors of our neurobiology.

Unique skills are rare by definition.