In my personal experience (take it with a grain of salt), the thing with "rationality" is, if you're looking for it, you'll find it, schools or not. People wan

In my personal experience (take it with a grain of salt), the thing with "rationality" is, if you're looking for it, you'll find it, schools or not. People want to learn about the world around them, STEM or not. What stops that learning from happening is mostly internal: a fear of looking dumb, a fear of being proven wrong before peers, etc. If we can teach people to be humble, change their mind when faced with new evidence, etc, I think the rest comes naturally.