Your best bet is probably somewhere here (ministry of education's page):
men.gov.p
the English page is only contact information but it gives you someone to write to and ask for info.
hint: Having a Polish person write to them in Polish will probably speed up their reaction time. Also if there's no answer at first keep on writing, sometimes Polish institutions prioritize their responses by how persistent you are.
Oh and here's a 64 page pdf in English
eurydice.org.pl/files/the_system_2008.pdf
warning: policies described are probably more theoretical than real. Polish people like having clear guidelines in print but they generally don't much care about actually following them.
My kids are little week in their studies, request you suggest me being a parents how do i polsih them for their better prospects......
We are expatriate living in United Arab emirates my kids are studying in CBSE, my kids are studying in Grade III / Ist and KG1, but they are little week in their studies I will highly appreciate if could suggest me to how do I polish them for their better prospects, please advice at the earliest convenience................