Teachers are normally figures of authority and responsibility, but when senior students leave school they get a chance to show a different side.\r<br>\r<br>School leavers videos are becoming a right of passage around the world. In the UK, teachers say goodbye to their students by busting their dance moves.\r<br>\r<br>Videojournalist: Greg Brosnan\r<br>\r<br>----\r<br>\r<br>SUBSCRIBE to BBC Trending: \r<br>\r<br>Like what you see? Follow us here:\r<br>BBC Trending blog: \r<br>Twitter: \r<br>Facebook:
