Well as TT proved, it is actually on the study design and is therefore assumed knowledge, in which case it's 'legal' and fair game really. Problem is whether it's 'ethical' or simply put, a dog move by VCAA. Similarly, all of Chemistry 1/2 is apparently assumed knowledge for 3/4. However, the dreaded occasion where they bring out all that 1/2 only stuff like the different atomic models and such has never come yet and I don't expect it to given it's complete lack of synergy with the content in 3/4. Maths is a bit more of a grey area I'd say since most of the concepts relate. Still, the fact that certain schools haven't taught it in previous years worries me though because I'm fairly certain I learnt similar triangles a long time before Methods 3/4... In this case, it'd more be the schools' fault than VCAA's if so.