We are contemplating a job assignment in Australia

I'm an American expat wife presently living in Shanghai China with my husband, 2 kids, 2 dogs, and 2 cats.  We are contemplating a job assignment in Australia but are really struggling with schools.  Our kids are used to a US curriculem in an International School and will have to return to it in 2 years.  My son also has some learning disabilities that require some adjustments to a traditional classroom.

I am also worried about our animals as it looks like China is on the non-approved list and they would need to go through many processes and quarantines before joining us in Oz. 

And ofcourse I'm terrified of driving on the opposite side of the road (from China and US), after not driving for over 2 years here in China. 

Any other Americans make this transition?  Recommendations for schools that are more in line with US curriculum?  and school year calendar?  Again we are used to be in the USA for summer (our summer June, July, August) to visit family and friends...with Australian terms our holidays would no longer align with family in states.  So many things to consider and looking for positive information on moving to Melbourne area. 

We've visited Melbourne and actually loved the area, but its different when you are a visiting tourist and a permanent resident.  So many things to consider on making a move. 
Thanks Dawn