I would read them all because I feel that it contextualises the ideas you are going to hone in upon. But, then again, I do philosophy for the sake of philosophy and not really just for the academic side of things. If you are deeply passionate about getting a strong foundation in philosophy, give the texts a read in their entirety
To be frank, even from the perspective of philosophy for the sake of philosophy, I still wouldn't necessarily advise reading whole texts. Proper philosophers should ultimately deal with ideas and their own thinking, not with other philosophers'. I'd even go so far as to say that the common idea that being a good philosopher requires detailed knowledge of lots of philosophers and their philosophies is quite misguided. Too often philosophy students are deceived into thinking they're "good at philosophy" because they have detailed knowledge of various "big names" in the discipline; more often than not, they're actually quite poor independent thinkers, even if they might be very capable of critically dissecting another person's view.
Mind you, this isn't really exclusively their fault a lot of the time - unfortunately, the majority of philosophy at tertiary level is
extremely text based, especially at the undergraduate level.
Anyway, just read the excerpts; for any even half-curious thinker, they should provide
plenty to think about. The emphasis should always be on
you and
your thinking, not on understanding the thinking of others. What's the point in understanding everything about other people's ideas, while having no idea what you yourself believe?
If you'd take say 1 hour to read the excerpt, but 10 hours to read the full text - most of which will be highly irrelevant to the kinds of questions you'll want to be exploring - you'd just be so much better off, both academically and philosophically, if you spent that extra 9 hours
thinking about what you'd read in the first hour instead of reading.
However, if this is just an academic exercise to regurgitate the content, without a deeper understanding than just reading the excerpts, it is fine. You will be fine by VCE standards.
This isn't really true. The current study design isn't conducive to blind regurgitation at all, and definitely emphasises independent reflection of the ideas raised by the texts. The fundamental purpose of Unit 3, for example, is to make students think about what a good life is. Unit 4 likewise invites students to challenge the prevailing conception of science as rational, objective and truth giving. Unit 4 also gets students to ask themselves "what exactly is the mind?".
The texts should only ever been secondary to thinking about these issues
as issues; the course is text-based, but it is not text-centred.
Get familiar with the text, see where the philosopher is going or the gist of things (which I believe is what I said in my OP). The excerpt selections sometimes do not do justice to the content and arguments of the philosopher; you may as well just pick up an anthology or read summaries online and throw the original texts away (which I am almost certain most philosophy students in high school do).
The excerpt selections for the VCE course are actually quite well chosen, and you wont really run into this problem, except maybe for Nietzsche, but Nietzsche is often just as confusing when you read a whole text of his for the first time without guidance anyway. For any of the wider context about the author or related issues you'd be better off just using the Stanford Encyclopedia of Philosophy, or even Wikipedia.
Most of the excerpts are actually chosen so that they start at the start of the overall text, so you aren't randomly thrown into the mix of things. Those that do not do this are otherwise pretty self-contained =)
[Y]ou may as well just pick up an anthology or read summaries online and throw the original texts away (which I am almost certain most philosophy students in high school do).
I can't vouch for everyone, but definitely all the schools from which I've tutored students, or schools I've otherwise taught/lectured at have stuck to the original texts. You couldn't really survive the VCE course if you just relied on online summaries, to be honest.