>I think it is because they went to schools where learning was still the focus Are you sure that's the case? Or is it perhaps because selection bias is bringin

>I think it is because they went to schools where learning was still the focus Are you sure that's the case? Or is it perhaps because selection bias is bringing you only the smartest and best foreign students. I went to a public university. The criteria to get accepted was much lower for Americans. Foreign students had multiple layers of competitive selectivity they had to make it through before matriculating there.