Grade

The most commonly used system in Polish schools is (with usual corresponding score percentages):
niedostateczny (unsatisfactory) – 1 – 0–34%
dopuszczający (acceptable) – 2 – 35–54%
dostateczny (satisfactory) – 3 – 55–74%
dobry (good) – 4 – 75–89%
bardzo dobry (very good) – 5 – 90–97%
celujący (excellent) – 6 – This result is for a perfect or near-perfect score (98–100% or more, for example by answering extra-credit questions).
'Acceptable' is a passing result.
Grades (specially expressed numerically) can be suffixed with + (plus) or - (minus). On rare occasions the = (double minus) is used, specially as 2= to express the very lowest passing result.
zaliczony (passed) – zal.
niezaliczony (not passed) – nzal.
The notations zal. and nzal. are used when the course is not important (such as sports).