Rooster, the economics degrees in Poland seem to be rather broadly treating the subject, without that much difference between e.g.'International economics' and 'Economics, finances and management'(what they've got at the UJ).
What you could do, is look up the list of courses that you'll be required to take(should be accessible from the colleges' websites) and check e.g. if you will have an opportunity to learn an additional language(s) alongside just the economics(see if the courses are extensive enough to give you more than just the basics). Having a reasonably good command of just one foreign language might be not enough when you enter the job market(I should know).
Other than that you could check if there's going to be a lot(i.e.enough) of math, or any other courses that actually might increase your competence as an economist, but it's probably not going to have that much impact on your job prospects as a recognizable name of the college, or anything specific that you can put in your CV would - like for example studying abroad for a semester or two. Check if your college provides such opportunities - basically they need to have signed agreements with some schools in other countries for student exchange - check ERASMUS program. Maybe SOCRATES too, unless that's no longer there.
That said, if you're not aiming for a life in a large city, then you could probably do without any extra skills and embelishments in your CV. Still, always good to have.
Calculus 3 is multivariable calculus. You'd have to check your school's curriculum to see if you need something comparable. You might not need it and I only used multivariable calculus a handful of times, really.
Polish schooling system does not divide math into separate classes focusing on e.g.particular parts of calculus or algebra. It's all bundled up as general 'maths', and you're expected to pass an exam testing this general mathematical knowledge when you're graduating from high school.
Some separation is only introduced in higher education, when you do get linear algebra and 'mathematical analysis'(basically the whole of calculus) as required courses for e.g. most economics-related degrees.
W stosunku do Zachodu konsekwentnie utrzymuje postawę papugi. W stosunku do własnego społeczeństwa przybiera rolę pawia
O współczesnym polskim 'inteligencie' (zasłyszane)
Heh, there's some truth in this. I'm not sure how much parroting is there with regard to the schooling system, but way too many people are ready to favourably compare Polish education quality, with (especially)the American one, despite not knowing anything about the latter.
ed: grammar