High school / College dates

[ShipitFMA]

Im in Australia atm in my final year of high school and considering going to college in the US.

SATs are the final exam in high school yeah? what dates are these?

When does the high school year finish each year and the college year start?

What should i be looking at in terms of schools/classes etc, i'd be interested in doing something business oriented like banking and finance or something like that

Any help on the topic would be pretty helpful and if anyone has experience in the matter please share

btw. im most interested in the college lifestyle over anything else, college/university in australia is good but nobody lives on campus or anything like that so its a different experience