Schools shouldn't be treated as these magical places where you're put in at some age and over a decade later you emerge a complete human being. You have parents and you spend more time at home than at school for a reason: you're supposed to learn from your parents.
A school can potentially give you a degree of financial literacy instruction. Your parents should be the ones paying your allowance money and driving you to the bank to get your first checking account. A school can teach you how to cook something. Your parents should be the ones eating your food and helping you cook it better. A school can show you some level of DIY. Your parents should directly benefit from teaching you how to fix the sink when it gets clogged. A school can tell you what kinds of careers exist. Your parents should love you enough to tell you that either your career ambitions or your financial expectations need to change. A school can tell you how to build a resume. Your parents should be the ones driving you to your job interview and to your job until you buy your first car. A school can give you a failing grade when you do poorly on a test. Your parents should be able to make you face the real, in-the-moment consequences of doing something wrong.
Expecting a school, public or private, to teach you everything you need to know is a grave mistake. You need people in your corner who are taking an active part in raising you all the way to adulthood and beyond. If you have kids yourself, that goes for them as well. If you aren't there for your children, to teach them the things that schools don't teach because they can't mass produce the lessons to nearly the same quality that you can give them, they'll blame you and the school for having failed them. And they'd be right to lay the blame at your feet.
Many people's parents are not present in their lives at all or don't have these skills themselves to be able to pass on. What you're proposing will just result in more people growing up without these skills. School should teach a person everything they need to know for adulthood to ensure that everyone has the chance to learn it. If your parents reinforce those lessons even better.
I'm proposing parents, or at least extended family members (which I should have mentioned), act as a family unit rather than letting the school do everything. Not only will this be a more efficient arrangement, because children are not metal sheets waiting to be stamped into the shape of an ideal person in a factory, but it will reinforce the failing bond within families today. This would lead to better educated, more intelligent, and happier young people.
Yes in a perfect world where everyone lives in a happy nuclear family that would be wonderful. That's not the world we live in and we need schools to fill the gaps and provide support for the children that don't have a home life that can support them. You can have both the school and parents teaching them but if you have neither it leads to shitty outcomes.
I know the nuclear family isn't always possible. If it isn't, then a few aunts, uncles, cousins, grandparents, etc. should be in the home as well. Schools have their utility, but by no means should they replace parents in all but the most dire of circumstances.
Just admit you were wrong dude. It’s ok.