Immigrating to Australia with a child that has intellectual impairment

Hello everyone,

I'm new to this group. We are trying to immigrate to Australia, but I saw on the immigration site of Australia that people with a intellectual impairment will most probably be refused.
My child was born premature and as result had bleeding on his brain and therefore has a VP shunt. He is in a special school as he's not able to cope in a main stream school. Otherwise he is in a perfect health condition. As far as I can see the only  "burden" he will be to the government will be his special schooling. And he uses medication for ADHD. We also will pay for all his medical treatments should there be any, but I strongly  believe there will not be any. And as I see it we won't be any burden as it is obvious to us to pay for schools, medical treatment est. we do it here in South Africa in anyway

I would like to know if there are any other people with basically the same problem that has been approved for a visa.
We desperately want to move to Australia.

Thanks
Leonette