OOO. I feel your pain so much. It's so unfair. And then schools start saying we don't have resources to cater for a small class of only 6 etc.
That happened with Economcis for me!!!!! I was getting A+'s, and then coming up to year 12, like 1/4 of people of our class of like 13 were gonna drop it or do TAFE. I was like =.=*.
What I did was encouraged people to do it, and answered any questions they have coz some were inetrested but were too nervous to jump into it without having done Unit's 1/2.
I have never heard of being able to do to via distant education, and wish I kenw it was a possiblity (but mind you, we did end up having a year 12 class).
But look, if worse comes to worse, you still have distant education as an OPTION. So if you really liked it, perform well, and have an interest you would do it. Also, can you maybe get some really smart year 11's to do it? We did that for one of our subejcts and had like 4 year 11's + some year 12's= enough to run the class. But thing is by middle of year we only had 6 pplz doing subject (minimum to run was 10), but it continued coz year had started.
Sorry I'm not much help, but please consider distant education. We need motivated people like you who have an interest in a subject to follow their dreams! And not miss out coz not eough people do it. You will regret it in year 12/Uni, as spesh maths opens many doors.
EDIT: Can I please also add. You can do it distant education. The what do you mean too much work? You must be intelligent enough to wanting to do it in first place, and its still year 12 work! So it's at your level. Furthermore you will have teachers at ur school who have taught spesh maths and they can HELP you, just coz a class isnt running doesnt mean no teachers who teach spesh maths are available. You can meet up once a week, twice or w/e.