Hi, I'm just wondering is it possible to study units 1 & 2 of subjects and do Units 3 & 4 at school? Thanks for responses!
Is your question if you can self study Unit 1 & 2, skip actually doing them and then go straight into Units 3/4? If you're going to end up not doing any Unit 1/2 subjects at all, then probably not. Take a look at the criteria to receive your VCE, and also the criteria to receive an ATAR.
http://www.vcaa.vic.edu.au/pages/faqs/vcecurrentstudents.aspx#H3N10051 You're going to have to complete 16 VCE Units. Sure you could 16 units of Unit 3/4 only (essentially 8 Year 12 subjects) and that'd satisfy that criteria (from what I can see anyway, but you'd have to do two English subjects), but the normal way would be to do about 5 subjects where you do the entire sequence from Units 1 to 4 (i.e. not skip Year 11), which easily satisfies that minimum 16 units you have to do.
If you're just asking whether you can switch into a new subject at the start of Year 12, i.e. doing a couple of subjects without doing the Unit 1/2, then yeah that really should be fine for most subjects. Some schools might not let you do a 3/4 without doing the 1/2, but there's no strict VCAA rule against it for most subjects. That's all assuming you're doing enough units to get your VCE though.