is there any good primary school there?

Not sure if I understand you - do you mean Perth in general? Perth is huge, with 1.6 million people and heaps of suburbs to choose from. Perhaps you could narrow down your suburb choice a little and it will be easier to help you out. There are many good private schools and government schools through out the suburbs of Perth. And, Perth is a great city for raising children and has great weather for sports and general outdoor activities. Perhaps you could decide if your preference is for beach side living, the hills, or general suburbia. Of course, travel time to and from your likely place of work is important because Perth is very spread out. If you call up Perth on google maps you can see how wide it is - and then you can look up private and independent schools for Perth and start looking at property prices and locations.