Most of the tutors are pushing to be offered courses which are taught in English even though most of them cannot speak English for 5 minutes without committing grammatical error.
The "push' here is coming from administration, not so much from faculty.
majority of our classmates are Polish, guess you want to know why?
They've fallen under the allure of an imperial language and imbibed a toxic ideology about its superiority?
There are more study materials in English than there will ever be in Polish
So? a good teacher can overcome a lot of bad teaching materials, a bad teacher is not helped by great teaching materials. Learning (effective learnig for most people) requires contact with a human being.
I've heard wonderfully eloquent and effective teachers (in Polish) who operate at about 50% when they use English.
The single possible exception to the rule (education in Poland is a lot better in Polish than in English) are computer related fields at higher levels.