Same here, I didn’t get into suzanne cory high school, so im starting to prepare this yr and work even harder. The test next yr is run by edutest, I dont know about nossal, but for suzanne they take 30 students for yr 10 cohort, so im assuming nossal will be similar, check the nossal website it might say there. In terms of preparation, out of the information i have received, edu test is way easier and it mainly tests speed. But next yr they take extracurriculars and written response seriously and it plays a huge role in you getting an offer. So i would recommend just building on your vocab and basic math skills, thats what i am doing and im gonna buy practice tests closer to the test date. But i dont know a lot about the exam, this is just what others have told me from their experiences. Hope this helps!!