> An apples to apples comparison adjusted for things like Americans who have English as a second language or other countries removing people from school roles significantly shrinks the differences.

"If I remove all the data that hurts my case, the data clearly supports my case!".

Those people that you want to exclude aren't transients - they're either current or future Americans which are called immigrants. So if you want a well-functioning democracy, economy, society, etc you have to educate them effectively too, not just the people that were born here.