Most Australian teachers of literacy and numeracy know that last 2 years of NAPLAN tests are online at http://www.naplan.edu.au/
You can print out a test and give it to the students and see how they go... but that is a lot of marking to do and then entering it into spreadsheets for analysis.
The other option is to use TurningPoint Anywhere and have the questions projected on screen. As most of the NAPLAN is multi choice it is perfect for gathering this type of data. Then it is just a case of running the report to get the marking done.
This has just hit my radar as well - http://www.naplanonline.net.au/ - if you have some lab time you can get the students to do a couple of these - again all marked for you.
Take the stress out of NAPLAN preparation.