I believe that the Naplan test that kids have to do is absolutely pointless and should be abolished with all standardized testing everywhere.
I've never received spectacular marks in anything (English aside) and am hardly a genius, but I did some of those tests earlier on in HS and was absolutely astounded by how basic all the questions were, especially compared to the stuff I'd already covered during classes. They offered absolutely no kind of challenge whatsoever. If kids are seriously struggling with those tests then I really worry about their generations future.
They need to be replaced with exams that actually test the knowledge of students on relevant stuff and provide them with some kind of challenge. Occasional testing on a particular topic in each subject is necessary, but standardised testing is just rubbish.
While we're on the subject of school, an unpopular opinion I have is that homework should be abolished during Primary School (except for some reading) and much less given to students throughout the earlier years of HS.