From Downunder.
It's not really taught that much, if at all. From my experience (may vary), we know the basics like, War of Independence, George Washington, Constitution etc; but it doesn't go much deeper than that.
I'm guessing generally most countries have their own history to teach, and unless it was something more global (WWI, WWII), or you specifically took History in High School, it wouldn't go much further than that.
I would, not even joking, love to take high school history classes from a bunch of different places. I think that would be really enlightening to see where things overlap, get glossed over, completely skipped, etc.
The closest thing to Australian history I ever got was watching the Crocodile Hunter and that movie "A Rabbit Proof Fence"--that I watched in college as part of a class, but the professor let us bring booze in so I dont remember the second half of the movie.