So what you have to understand is that if you particularly are in the public/government school system, funding is tight regardless of where you are. Schools will not run subjects for the sake of it and will better distribute their human resources to other required areas.
In an ideal world, everybody would get to do the subject they wanted with no worries at all. It does not work that way, however, as there are several considerations e.g. timetable blocking, enrolments, specialist staffing for the subject, etc... Unfortunately the smooth running of the school's operations outweighs your personal subject preferences (as harsh as that sounds, schools too are a business).
Government schools in particular (at least the ones i've been at as a teacher) have a high proportion of part-time staff which makes the timetabling even more complicated because the allotments given to teachers are tougher due to their requirements too.
I'd recommend that if you and your mates want to do Englang, you go and speak to the Head of English or your coordinator/manager to discuss it. When I was in high school, I fought for about 2 years to get a VCE Computing class to run as it too is not a popular subject. Persistence pays off and if you can demonstrate you have more than 2-3 people that want to do it, they may just consider it. I've seen subjects with 1-2 students run at some schools, but jeez unless you're at an independent school I can't ever see that happening frequently.
Your other alternative is Distance Education (now known as Virtual School Victoria).
Cheers.