I'm another Australian, who was educated in a private school until 2012.
The English class was horrendous. The whole funny thing about this story though, is that I was in the class with the lowest skills, and yet now, ironically, I'm studying writing at a university level. Sure, my major is "Creative Writing", but that is still writing.
The system just feels horrible to people like me, who rely more on the creative side on their brain. The English class was unbalanced, focusing more upon essays, papers, and the more logical formats of writing. This of course, did not interest me, so I didn't put much effort into it. Even when we did study how to create a story, they barely put any time into it. By the actual assignment/tests, I had the imagination of what to create, yet not the information on how to create it properly.
Not only that, there wasn't much effort into placing the basics of writing, spelling, and grammar into the students. So no wonder why we were in the same damn classes year after year. Also it's like how the first Australian poster said, you do it how the teacher does it, and boy, the teachers I received were terrible. Sure, it's partly understandable, since many of classmates were damn arrogant pricks who wouldn't shut up in the lessons.
Still, that is no damn excuse to not teach me probably, especially since this was schooling in the private sector.
This is why, when I'm going to become an author of great reputation, I'm going admit that school did nothing for my writing skills. In fact, I'll give all the credit to the Technical and further education/TAFE institutions. They were the ones to give me this skill. Of course though, I'll thank my university for allowing me to hone my skills, and the general experience of life.
To think that this country is cutting the budget to the TAFE institutions. It rather disgusts me.