@beth_loggins para saan ba?
For Skills Assessment, 2 years lang like sa case ng Engineers Australia
For Visa Application (visa 189), 3 years
http://www.immi.gov.au/visas/pages/checklists/189.aspx
<blockquote>Evidence you have at least competent English. You must provide evidence of one of the following at both the time of invitation to apply and when you lodge your application:
You have achieved a score of at least 6 in each of the four test components (speaking, reading, listening and writing) in an International English Language Testing System (IELTS) test that has been <b>undertaken in the three years immediately prior to lodging the visa application.</b></blockquote>