I'd say the pressure on tests and quizzes here in Poland. The tests don't really rely on critical thinking like they did when I lived in London, a lot of it is based on theory :/
It always discourages me when I'm studying for a test and I'm thinking... this has nothing to do with what I want to do in the future. Why am I studying this?
I wish there were more lessons like there were in England... if I didn't move I would have picked my GCSE options already, and the classes were more relevant to my future- there was a wide variety such as Business, Textiles, Citizenship- whatever you want to do!
Maybe it's because I haven't lived in Poland for long, but studying is a LOT of effort for me- I guess there's still some of a language barrier, maybe that's why, but I keep questioning the Polish education system xD
In the end, facts and figures that I forget right after the test won't get me as far as critical thinking, which is why I'm grateful I learnt those essential skills. I plan to go to university and work outside of Poland.
I suppose that's the only major complaint I have about school- I really question the education system here and as a result I really lost motivation

I'm not saying the facts and figures are useless, in fact thanks to them I can sound really smart, and there is SOME critical thinking there, especially in Polish literature, but the tests are just... difficult. It caused me a lot of stress and crying, but I guess it paid off because I had a really good grade average.
The food in my school is actually quite nice, and if anything you can always bring food from home or buy something at the shop. Teachers actually have a good sense of humour haha, and they're more laid back than in England- there's even a facebook page dedicated to funny quotes of teachers from my city. Lessons are boring, for the most part, but sometimes they're okay- depends on the teacher and topic.