I am a SAHM to 2 Profoundly Gifted kids. Sometimes it's a double edged sword isn't it! My DS is due to start Prep next year but is already completing Maths (among other things e.g. reading) at a Year 4+ level.
Firstly have you or the school had your DD assessed (IQ test)? The only reason I ask is when we found out the schools and we as parents were much better off knowing exactly what we were dealing with.
We spent a lond time looking around at schools (we are in QLD to). We were basically told that because he scores off the charts when it comes to IQ tests that they could not possibly cater for him and then my DD in a couple of years.
We went from school to school asking as many questions as we could. This is both Public and Private. We got the same response, "It really depends what you want from an Education". Personally I thought that was obvious.
We didn't want to have to move DS from school to school to test ones, as he is extremly emtional and doesn't handle change well at the best of times. We also didn't like the idea of certain kids being removed from the general classroom all the time for other classes.
While it's great that they get the attention and extra work they need. And this may suit some kid's really well. We felt that our DS would suffer from this socially. Yes he would make friends with other kids in this group. But what about the rest of the school and classroom. We have tried from day 1 to ensure that our kids can socalise with people of all ages and intellectual levels, as this is how it is in the real world!
So with some help from some of the lovely ladies on here we looked into Homeschooling. We have found an amazing Distance Education School. DS will start what is technically Year 1 next year, not Prep. And they will be tailoring a program based on his direct needs. We felt that what ever decision we made it was also going to effect our DD in a couple of years as well.
We are also members of Homeschooling QLD and the several little groups around us. This will ensure we have the social side covered along with: swimming lessons, little athletics, music group and anything else your child may want to participate in.
I have listed a couple of links also that maybe helpful for further info (the first link is a group that can help you with schooling and general advice):
Sorry I have rambled on, but I hope I have been of some help. I just wanted to tell you of our experiences so far. If you have any questions please don't hesitate to ask and I will try to help you as much as I can.