This. While I believe mathematics is taught poorly in schools, information technology/CS is completely neglected. Last time I checked, unless you took a year 12 IT unit, the only thing you learn about computing in high school is how to touch type and make PowerPoint's.
Going on MJ's point here, I completed I.T Applications as a Year 12 subject last year. Although the subject does not touch base on the intricacies and complexities of programs, I see they at least attempted to make portions of the course engaging. I can't really speak for Software Development but I can say that Apps really introduces you to concepts that are beyond the traditional Junior School Information Technology classes. It was intriguing to learn concepts such as networking and the general functions of databases, interesting area, heavily neglected in high-school at times (not my cup of tea but hey I like learning different things so it was refreshing in that respect).
To the Original Poster.; I have a mindset in which I enjoy mathematics and science, but I also have a deep passion for Humanities subjects, Literature and English. My belief is that in reality no subject has an 'over-emphasis', in fact it has an under emphasis in my opinion.
I'll start off by saying this, in Year 12 (I didn't think this was true until I saw it) you will get people who argue that "Oh English is unnecessary", I fervently rebut this point as whether you study science or not, communications skills and expression are all pertinent tools for successfully conveying one's opinion. It is to my belief that a criterion during practical reports is how well you express yourself - English skills are a must here. Furthermore, people argue that areas such as 'Text response' and Literature are unnecessary, again I rebut this point. The purpose is not to completely just test your ability to interrupt a text - well if that was a point I could justify that pigs could fly in Life of Pi or something - the point is to test your ability to look at a text or passage and derive your own meaning and produce a cogent and coherent argument which is supported by evidence; again a pertinent skill in life.
So yes, English does get shot down but ask yourself, if you possessed all the knowledge in the all world but couldn't effectively express it in an engaging manner, what's the point?
So science and mathematics. The vigor of mathematics is beautiful, I will say that. Mathematics is the very underpinning to a lot of things we take for granted now, for example, computers. Mathematics does not have enough focus in High-school in my opinion, not so much in Year 11 or Year 12 but more so in the lower year levels. Personally in junior math I think I did the same topics three years in a row and they just became marginally more difficult. Then you reach Mathematical Methods and suddenly you are thrown 1000 new things to learn. Perhaps we need more emphasis from earlier year levels (algebra could be introduced earlier probably, I don't know make it engaging and offer kids Coco Pops for getting it done or extra playtime, or buy them ice-cream you know the one with the bubblegum nose - that was the best thing on a summer's day).
Science is yet another field where we need an emphasis from an earlier age. When I did Chemistry as an elective in Year 10 we had an exchange student who by the looks of it literallyk new everything (the extension was equivalent to Unit 1 Chemistry), I think she could have done Units 3&4 comfortably in Year 10 and most likely would have been able to sit the VCE exam at the end of Year 10. This makes me believe that we just again, as in mathematics, tend to focus too heavily on repetitive concepts in Years 7-10 and do not take a more holistic approach. Personally as a Year 9 or 10 the idea of deepening my knowledge by studying Biochemistry (Unit 3 equivalent) would have been a very exciting concept as I had already studied atoms and compounds by this stage so nomenclature and organic chemistry would have not been a far stretch from this. I haven't done VCE Biology so I won't comment on it.
As for Physics, I like it, more so the theory of it though. Physics needs to have the studies that it had before brought back in, in my opinion. Concepts such as torque and a deeper inspection of transformers all deserve their place in the VCE course.
Humanities are lovely and honestly subjects such a Politics do not get their chance to star in the spotlight. Fascinating areas that again, are unfortunately overlooked in the earlier years. We study the same eras in history repetitively throughout our junior years and a closer inspection of the politics surrounding such eras would be nice. Moreover, I believe that the addition of Ancient Greece and Egypt history and society would have been a nice addition in later years. The last time I studied Egyptian history was in Year 7, however, it was fantastic.
In summation, we need an emphasis on more than just math. We need a holistic emphasis throughout the broad areas that we study throughout high-school, not only to make certain areas more engaging, but to also alleviate this idea - of what I am sure many of us are experiencing right now - "Oh I don't know what I want to do in university!"; an emphasis can allow us to really understand our passions from a earlier age and then perhaps, the choices we make in Year 12 would be much more easier and simple to make.
That is my 5 cents.