Well, I had my own issues during my HSC year in 2010. I knew they'd notice eventually that I wasn't attending classes or attempting class work, assignments ect. I wasn't okay mentally and physically. I was told to repeat, pathways or seek HSC elsewhere (TAFE) and honestly, I agreed with them.
I did put this onto myself though and I'm correcting it now, I chose to do my HSC at TAFE. Resolving issues can be a struggle, infact this is my 3rd attempt at HSC. I rushed back into HSC and didn't resolve my issues as I should have and trust me when I say this, time is precious. I'm actually doing pretty well @ TAFE now, I enjoy it and see myself furthering my education.
It's really up to you whether you want to reason or not about continuing HSC this year. Personally, I went with resolving issues > taking up the HSC again.
Anyways GL. : )