Poland always starts school on 1st september unless it's weekend on it, then it's either 2nd or 3rd. Summer holidays start somewhere about 20 june, it changes every year actually. But actually school ends somewhere at the start of june, lessons become shitty and we stop learning, and over 70% of students just don't attend lessons anymore xd
By the way, my avatar is from one epic polish comic, fucking goddamn epic. I'd link it but it's in polish.