Hey smartypants27! I'm assuming you're thinking of accelerating in further maths?
I think further is definitely a great subject to accelerate in, especially if you have strong a background in maths. Further is one of the most popular subjects for people to accelerate in, as the completion of 1/2 is (arguably) not necessary to do well in 3/4.
Speaking from experience, I had the opportunity to accelerate in further, but didn't, and I really regret it now. Of course that's just my own experience, others might have different opinions.
Another thing about accelerating is that most people do 5~6 subjects in VCE in total. If you did a 3/4 early in year 11, then that's one less subject to worry about in year 12; not to mention by doing a subject early you're able to devote most of your attention to that ONE 3/4, so you have a better chance (theoretically) of doing well.
Hope that makes sense!
