Well, I think I could have a bit better grades Let's try to convert Polish grades from Lower Secondary School, equivalent of High School in England, to English

Polish-4
Mathematics-4
History-6
Geography-4
German-4
Citizenship-6
Physics with Astronomy-2
Chemistry-3
Physical Education-5
Biology-5
Technique-3
Computing-5
Religious Studies-4
Music-4
Arts-4

Ok, lets translate official meaninings of this grades

6-excellent, 5-very good, 4-good, 3-sufficent-,2-passing,1-fail

So that's my grades