I think Australian schools tend to form a more friendly environment than many of the schools in Asia. In Australia, a teacher is somebody who will know you quite well by the end of your high school days - and not just your academic strengths and weakness, they'll also know your career plans, your personality, your likes and dislikes, etc. An Australian teacher is also someone who tries to cater for an entire class of students who will all have different backgrounds and levels of ability. From what I've heard (and I would like confirmation of this) many teachers in different countries don't act as this egalitarian extra support resource. They are seen as largely unapproachable and disciplinarian.
I think this system has a lot of benefits, and I think I would have found school considerably more difficult if the environment was any less friendly. I also think that students can really thrive in this environment because they feel as though they can try out new ideas, particularly in terms of their creativity and in developing and expressing their own ideas an opinions and being analytical and critical, particularly in regard to authority. And I think these skills are fairly invaluable, especially once one leaves high school. I remember from a show I watched about people coming to Australia from Asia to do Masters degrees really struggled with the level of critical thinking involved.
However, there is a cost. And perhaps maths is the area that highlights the cost a lot. Lots of Australian students are 'afraid' of maths and maths being as rigorous as it is (as in, you can't experiment with your ideas in maths - you're either right or wrong) a lack of discipline in this area and an unwillingness to accept authority will get you nowhere. Adding to that, Australian students aren't taught the basics of logic or proofs at all in high school so even if they were in an environment which was highly black and white and disciplined, it is kind of difficult to see how everything fits together. That said, many students do very well in maths, and it's hardly fair to say that because a bunch of students in one class scored badly on a SAC that 'so many people are bad at maths'. And I think also that once someone has majored in maths at an Australian university, the discrepancies in maths ability across continents wouldn't be nearly as pronounced. But then again, I guess there you aren't dealing with the 'average' student, you're dealing with people who like and are interested in maths.