Studying! Omg! I Got Fairly Good Results Without Study
The only subject that I think you can really study for in the School Certificate would be Australian History Civics and Citizenship.
English: It's all the usual comprehension/analytical skills and knowing how to write. Study is not really required in English, because it's mainly assessment of skills.
Mathematics: Since the test has to be accessible to Standard Mathematics students, it's mainly general knowledge and basic skills. Barely any study at all unless you do not know the basic concepts of Mathematics
Science: The test was mainly skills questions requiring some general knowledge. Some study is required usually to remember a few terminologies and techincal words, but intensive study is not necessary.
If you need to study intensively English, Mathematics and Science for the School Certificate, then you might as well just leave from Year 10, because the whole damn course was taught to you and you are studying for basic skills that would have been learnt by Year 7 and Year 8.
Geography: This subject can be studied moderately, since you need to memorise quite a number of terminologies and geographical processes. Otherwise the test is mainly using simple geographical skills.
History: This subject is the one that I reccommend to be studied the most. You have to memorise A LOT of events and dates. Fortunately 90% of the test is based on only two focus areas. If you already remember the events and dates in Australian History for the whole of the 20th century then well done. Otherwise, there are some skills in analysing sources.
For History and Geography writing tasks, I tend to use the BS factor. (If you know what I mean!)