I'm living near Sydney - my dd is only 18 months so I cant help you with schools I'm affraid. We live in Manly, its lovely, you can commute to the city on the ferry (approx 30 mins), have a look on realestate.com.au or homehound.com.au for ideas on rental prices.
I am moving to Sydney with my two boys, 2 and 4. We will probably be working in the city centre and I'm looking for suggestions of good areas to live for about $600-700 a week rent (if possible!). We would need a reasonable commute to the city as well as good schools for the boys.
Also, does anyone know how to find out which are the good schools and how to meet other Mums!