In response to the OP, my school barely did anything like that. We didn't even look at how to write resumes. Despite our 'career advisor' (a random D&T teacher who was roped into the job) insisting we were never going to amount to anything because we were an immature bunch of losers, he never really did much other than printing off some Uni brochures and pointing us in the direction of TAFE and a couple of private colleges.
I think if the students saw value in what he was giving us, they would've paid a lot more attention. In general though, we didn't take well to wasting 20 minutes a week being shown things we had already seen on the internet two weeks ago.
On the other hand, I definitely would like to have learnt more about HECS, tax, Youth Allowance etc. for the short term and perhaps more about credit cards, personal and car loans, interest rates etc. for the long term. I think in high school it would be most beneficial to focus on the things that would most likely affect the students in the next 5 years of their lives. Considering how complex these systems can become, I think it can be very overwhelming for someone to be thrown in the deep the moment they have graduated from school.
Ultimately though, if someone really wants to find out about something, they will. The people who don't have enough initative to find information on their own probably wouldn't give enough attention to a class like this to benefit from it anyway.