International exchanges are not uncommon, but almost every person I know that has done one has been between Australia and Canada. I suspect there's a comfort level with language and somewhat similar colonial history that makes this a common exchange.
Reading blogs of teachers who wrote while on exchange illustrates just how amazing and powerful these experiences can be. Each talks of being professional challenged and reinvigorated as well as personally excited and refreshed.
I'm hoping to participate in an exchange myself and reaching out to the wider PLN to gather information on exchanges, generate interest in participation, and possible connect with a potential exchange partner. With luck my family and I will spend 2014 in Australia! (http://teacherexchange.ca
Ah thoughts on exchanges? Have you done one? Thought about doing one? Know someone who has? Know someone who wants to? Would love to hear your stories.