Relocating back to sydney from ballarat, victoria, in need of good primary school

Hi, although I grew up in sydney, and also attended my primary, high schooling there. I am still not sure which one would be the best school for my 6yr old to attend. I know sydney has changed since i went to school there last. People keep tellimg me that it matters where she will be attending.

I'm currently from ballarat victoria, and planning to relocate to sydney in the next 6 months. Here she is in prep grade and in sydney it is called kindergarten.

Any help will most obliged and very greatful..