Megaconference Junior is a project designed to give students in primary through secondary schools around the world the opportunity to communicate, collaborate and contribute to each other's learning in real time, using advanced multi-point video conferencing technology.
Planning for Megaconference Junior 2013 starts on 30 October. This will be the 10th anniversary event and it will be held in May 2013 - date to be decided. Their web site is currently undergoing maintenance and I'll post its URL once its up and running again.