Well... that was sex ed at my school... We discussed all aspects. And grossed out any yound male teacher. The female teachers were very good. And we had to deal with 'women's troubles' too. A visit from the tampon companies were looked forward too - funny.
HSC. Well, I'd neve4r want to do ONE exam. In case you forget, the HSC is over one year and the exams are only 50% of your score. What matters is long term work. Bit hard to co-ordinate that on a national level.
Then of course is the difference in funding for all the states (NSW gets less cash per capita than the less populated states do).
So... how do you make it fair?
Yes things are different in each state, but they have ways to convert it etc.
It's like trying to do law in each state. It's tough moving from one state to another because of the different laws, both statute and common. You have to get permission and accreditation in each different state. But, it is possible.
I'd entrust my opinion of the one exam to those who know about it. The teachers. You know, the ones that have seen so many students go through? I know many teachers, most who have been working for 30 years or more. Some I admire alot. Many from different states. I have been privileged to get their opinions because they appreciate mine. They know the monumentous effort the one exam will take. And they know what sort of a cock-up it can (and most likely will) be.
Now I know we rank second in the world for our literacy studies... even with shocking investment in education. So if you rock the boat too much... be prepared to sink.