I don't think that it should be taught in school, education about one's own finances is a private matter that is worth learning which will have an impact on oneself in the future.
So no one is responsible for this for someone's future, but someone must be able to control their profits for their own future.
Managing finances in life is quite important for the future, that is what will determine our future so this is considered quite important.
At school they are only taught about education and the direction of that education is to become a good and useful human being for oneself and for one's own country in the future. This means that things related to finances and how to manage them are only told in general terms, while things that are more in-depth or more complete have to be looked for yourself outside of school. Either by asking their respective parents or people who are experienced in the field of procedures for managing finances in their lives.
I also quite agree that this is not taught in elementary school or middle school, but it would not be wrong if it were taught in special lectures to every student who after graduating from college they must be able to become very independent individuals and be able to be the best for himself and for his family too. Because they are no longer children who have to limit themselves to knowing something, moreover it is also highly expected that students who have graduated from college must be able to create jobs for themselves and for the people around them too.