The best polish school I strongly recommend is Jagellonian. They are the number one school in Poland. They are approved by the state of California for Licensure including the English program. Which means Jagellonian's education system meets California's standards. Jagellonian is the only school so far to receive this distinction since 2007. Krakow is a BEAUTIFUL city. I cannot stress that enough. Most of the locals speak english which is comforting. How do I know this?? Because I've been there multiple times and some of my friends attended the university there and did really well on the USMLEs. I dont know about Poznan or Gdansk because I didn't go to those schools. I used to go to Lodz. For Goodness Sake, Do NOT go there. BAD EDUCATION(they DONT teach you medicine well and on top of that they DONT teach like a US medical school even though(AIM(alliance institute of medicine/MUL)Medical university of Lodz) claim on their website that they are based on a "US curriculum;" the city is ugly and dirty. You don't feel like you are in a city because there's hardly any buildings taller than 10-20 stories. I've seen taller and more beautiful city outlines even in Poznan and wroclaw and Lublin. I've visited these cities during my time here. The locals hardly speak english and it's a very depressing looking city overall. My Strong advice do NOT go to Lodz. DO NOT believe what AIM/MUL tells you. They don't tell the whole truth about the program and the city. Good luck in your decision.

Check out the thread entitled: Polish medical school ranks.
Click on the website posted by Kluver B

To clarify, this is for the POLISH medical program ranking. I have NOT heard of a ENGLISH medical program ranking of polish medical schools. Although like I said earlier, my friends went to Jagellonian and they were very happy with it and did really well on the USMLEs.