Education System

Being a student at RCEC, I was fortunate enough to have a class that taught me important things such as taxes, checking and balancing, and mortgage, but most schools don't teach these things for whatever reason even though these are encountered in everyday life.
What I've noticed is that most of what gets taught in school actually isn't used in most people's everyday lives, which makes me question why it's mandatory to learn. Now, obviously, these topics need to be introduced, but going any further than the basics in an introduction to these topics should be optional. However, classes that teach about things most people do mostly everyday should be mandatory.
For example, which one are you going to do more likely if you're the average person:
*Pay taxes
*Use the quadratic equation
Chances are, you say the first one. And if that's the case, why is so much time being wasted on the quadratic equation as a mandatory part of math instead of taxes being mandatory?
Math is needed for taxes, obviously, but honestly, most of what you'd need for taxes you would learn through the basics of an introductory math class rather than having to sit through lines and curves on a graph, wasting away at the time you could be using for something that will help you all the time in real life.
Being a student, someone could just come up and say "Oh, you just don't want to do school work." and, honestly, that's true, I don't like having to do school work, but that's only because most school work I have to do... doesn't really apply to what I want to do as a YouTuber and as an adult with a career. I need basic maths to understand what I'm going to be paid based on views, not some crazy mathematical term I might not even remember or even be able to pronounce.
And that is why most people don't like doing school work in the first place: It doesn't interest them as part of what they want to do with their lives. And many people retort with "It doesn't matter if it interests you." To which I have to say, then what's the point in doing it? If it doesn't interest you, there's not much point in doing it. I can't actually practice what I preach, unfortunately, because if I do, I have my own consequences to deal with, but even then, that doesn't make my point null, void, or moot at all. The consequences exist for not doing this but there's really no point in consequences for not doing pointless things, now is there? And in fact, many people might choose to do things that are generally considered "boring" by most if they choose to, but have less interest in doing it when forced to, causing them to not do it.
If it were up to me, the only mandatory classes I'd have are introductory to basic topics, civics, foreign language, and a class that comes after the introductory math class for things like taxes, checking and balancing, mortgage, etc. Anything else is a mandatory class for whoever to choose whatever they'd like to help them succeed with what they want to do with their lives.