When I was in the Australian system, teachings about health and relationships were excellent, and science and literacy were brilliantly paired. However, the curriculum poorly represented Indigenous Australian peoples and their history.
I then found the British educational curriculum to be incredibly thorough. Grammar, maths, and history lessons are in-depth and, for the most part, pretty interesting. However, the curriculum is so packed that it places unrealistic expectations on both staff and students. I found it to be incredibly stressful.