I'd say the Australian 3 unit maths curriculum should be a minimum prerequisite for any engineering degree. 4 unit maths would be ideal, but you might be looking at a 4-5% participation / qualification rate at most schools.I am more concerned about the level of mathematics in Australian high schools, which leaves a lot to be desired. You see a lot of first year kids dropping out of STEM in university for this very reason. Unless you went to an elite private school, Australian HS-level math generally does a poor job of preparing you for the rigor required in university.