Both my kids go to Port Noarlunga. I would take the advice on the My school website with a pinch of salt as one of the schools that Port noarlunga is compaired to in the the middle of nowhere - so there isn't really a comparison.
The best thing to do is go and meet with the principal, Mrs Heather Walker. She is very approachable and will arrange for a tour around the school. We have a lot of English families at the school
We have had no problems at all with the school. They have an excellant 4 year old program and have very close links to the kindy.
I think the best thing to do is to visit all the schools and form your own opininon.