There is a basic misunderstanding and mislabeling that results in people asking questions about the education level. That isn’t it at all. Conservatives are authoritarians. The number one authority is “Our Father who art in Heaven” then come Donald Trump, Alex Jones, Sean Hannity, etc. They succumb willingly to these father figures. As a result, a limited number of “fathers’ provide nearly their entire education. Some of it is just utterly ridiculous to the rest of us - the earth is 6,000 years old and IF dinosaurs existed, they existed with people. They’ll read endless books put out by a Right sided press or by a specific “Right” author. They’ll listen to every single episode of Alex Jones without questioning a single thing he says. They may well be better “educated” than the rest of us. They are just limited to get their info from the places “Big Daddy” tells them they should.
The difference isn’t in quantity of education, it’s in critical thinking - or using critical thinking to evaluate the things they are being taught. When you’re authoritarian in orientation, you hand off the job of critical thinking to those to whom you pledge your loyalty and your trust. From that point on, your world is closed and your mind has no self-defense.