Australia is similar. You can leave school at the end of year 10, or stay and do another 2 years of high school, and then sit the final exams, which have a different name depending on what state you live in. Those final exams have very little meaning outside of going to uni, though it always looks good to have good marks. The leaving school at 16 thing was once VERY common. As little as 20 years ago the majority of students would leave at 16 and then get a trade, go to trade school and live their lives. Now its more common to finish off the final two years, and then figure out what you want to do, but you can still legally start learning a trade at 16.