Prince William and Kate Middleton could break Royal tradition by sending their eldest son, Prince George, to Marlborough College in Wiltshire, which is Kate's old school, instead of Eton.The couple recently visited the school, which costs £47,000 a year, sparking rumours that George might be enrolled there. It's thought that Kate isn't keen on single-sex schools like Eton because she didn't enjoy her time at an all-girls boarding school.