I've found people quite enjoyed doing the quiz so I've decided to add the quiz to the Australian Dictionary site and I've now called the quiz the Australian Spelling Test. You can access the test from the menu, or go direct to the page www.australian-dictionary.com.au/spelling-test.
By the way, for those of you who think my spelling may be perfect, it isn't. Even though I know these words and have done the test many times, after returning to the test and not having done it for a while, I could only manage 9 out of 10, and it still took me three attempts to work out which word I was spelling using a secondary spelling variation.
The preferred Australian English spelling dictionary I've created has identified over two and half thousand such words (as well as errors often found in spellcheckers) and the add-ins I've created remove the secondary spelling variations for those using products such as Microsoft Office. Many people consider secondary spelling variations to be incorrect, and often they're mistaken as being American. One thing for sure, is you use the preferred spelling you'll be considered to be using the correct Australian English spelling and the spelling in your documents will be consistent.
Creator of the preferred Australian English spelling dictionary.