A few teachers who already gave us our yearly exams have promised one more test this year, plus two other subjects I haven't had anything on yet. o_O That's four in 2 weeks. >_<
Year 12 is the Higher School Certificate, the final exams for your entire schooling which can determine the rest of your life and University afterwards.
Next year is the year 10 school certificate (the major exams for everything, look it up on Wikipedia or elsewhere), once you do that you get an extra month of holidays compared to other years. ^_^