There was a guy from Brasil in my first year CS studies (in Poland). His Polish was passable I guess, but it was just no match during say intense Linear Algebra

There was a guy from Brasil in my first year CS studies (in Poland). His Polish was passable I guess, but it was just no match during say intense Linear Algebra lecture, where Polish native speakers were barely keeping up (because the subject itself was enough and required tons of concentration). Sure enough, he dropped out after the first semester.