A school principal fed up with cyber-bullying has used his newsletter to send a blunt message to parents that reads: 'Get your kids off Facebook, this verbal sewer is harming your children'

Principal Chris Duncan, from Lindisfarne Anglican Grammar School, in Tweed Heads, said he normally wrote an 800-word article on education or school issues, but he was prompted to take a different approach after having to help a 16-year-old student who suffered serious abuse on Facebook.