I think home economics should be how to run a house. It takes a lot of work (and I don't mean that sarcastically). You should learn about utilities (deposits, how to connect, what they look at what you need to know), basic home repair (leaky sink, backed up toilet, backed up sink, repairs), when filters need to be changed in your heating and cooling, what you need to set up a kitchen/home (and how much that is going to cost), sewing, cooking, basic first aid, budgeting, etc.
There is a lot of work in running one, not to mention how to get one. They should also have a finance class about Roth IRAs, investments, how retirement works, etc. I think back to all the life skills I didn't really have/understand when I turned 18 and moved out on my own. For example, I knew nothing of my tenant rights or renter's insurance. I didn't know why I needed it or I was liable for. I didn't understand car insurance really and how to shop around for it, etc.
So of course, I try to prepare everyone growing up in my life. This includes why taxes are held from your paycheck and what percentage they are held from, etc.
(steps off her box)