aaaaa For year 10 entry?
General rule of thumb for selective schools and stuff: learn a year ahead + learn a little bit of 2 years ahead
I would recommend the JSO syllabus for science ngl, it's very comprehensive https://asi.edu.au/resources/#jsoexamresources
that's the link to all the syllabi for science, should cover most of what you need
useful additions to that list:
- stoichiometry (chem)
- extension cell parts and function (bio)
- properties of bonding types (chem)
- conservation laws and suvat (phys)
everything else should suit you well
it's useful to know quantitative versions of everything, however for selective a conceptual understanding in all topics is more important
mathematics, probably just everything before methods is useful (trig, polynomials, geometry, probability)
Mathematics I can't think of a comprehensive list rn, sorry, I'll try and come up with one later