I'd bet it's more likely that higher education correlates well with elitism, and that elitism happens to have a left-ish flavor in some countries and a right-ish flavor in others, simply by accident of history, not by some general rule.
I don't see how.
> If you look outside the US the education level does correlate with the political spectrum.
I didn't mention anything about the US, it's a global phenomenon. Personality is a largely biological construct, and it's also highly correlated with political leaning.
Looking at the big 5 model, left leaning people tend to be high in neuroticism(emotional stability) and openness, and low in conscientiousness. Right leaning people tend to be the opposite.
These same traits influence peoples decision to work in academia, openness is a beneficial trait for learning new ideas.
Meanwhile people high in conscientiousness, low in neuroticism are highly sought after in industry.
I feel bad harping on common talking points but most degrees do not teach analytical thought.
As my example stated, the far right in Australia would be considered left in the US... the whole spectrum has moved... not talking about individuals... they still exist across that spectrum