Nothing compared to the order I went through in Germany: 1, 2, 3, 4 (elementary school until here), then VI (read in Latin, sexta), V (quinta), IV (quarta), lower III (tertia), upper III, lower II (secunda), 11, 1st semester, 2nd semester, 3rd semester, 4th semester.
Does anyone still use these Latin terms? When I went to school in the 90s and early 00s we just counted from 1st to 12 and university just was it's own thing and how many semesters you were in didn't matter that much because there was no class structure.