A few decades ago, high schools used to teach home economics as a required class. A semester of simple cooking, price comparison shopping, how to balance a checkbook, how to make a budget, how (and why) to read a prospectus, the power of compound interest. Somewhere along the line it was axed (along with the basic civics class).
I guess they figured it was all stuff the parents could teach. Except when those kids grew up without it, they couldn't teach their kids anything they had no clue about.