An exchange student learns best by becoming completely immersed in the host culture and daily host-family life, and through temporarily halting the Australian way of life.  This is why we discourage friends going together.  You can definitely encourage your friend to apply as well, but do not expect to be placed near each other as your placement will be determined by the best host family match – not geographically.  It is a system that works very well to ensure you have the best chance at an amazing student exchange experience!