Peanutter - As a teacher, I can say that whilst the naplans can give some indication, they aren't necessarily a true reflection of the school. The school I work at for instance doesn't always look awesome if you look just at naplan results. The fact is, we are a small school, with usually only around 15 kids sitting each test. We also have two special education classes in the school. These kids are entitled to sit the test too. If they sit the test (as often at least one does), you suddenly have 1/15 (sometimes much less, some year levels have less than 10 kids in them) who gets a very low score which then skews the schools results heavily.