To the economy? Yes, we all should endeavor to find that which will allow us to maximally contribute to our employers, and reduce participation in things we are not excellent at. But I would very much dread living in a world like that.
If the question is around what is important to ourselves, then I would argue that all of K-12 education is important. Every subject we are taught in school is vastly deep and interesting beyond what we can even imagine. Don't let a bad teacher scare you away from any subject, ever.
There are many things I am not particularly good at, which serve as great hobbies and outlets for myself. The reason I enjoy them so much is because they have no economic utility. Almost all of these subjects, I first encountered at a very young age, and almost certainly in a school setting.
The world is such an interesting place, I really hate seeing it reduced to the black-and-white of economic and employer utility.