At least three teachers in New York have been fired for inappropriate dealings with pupils on Facebook, one of which led to a sexual relationship. Over the last six months the trio used the social networking site to strike up friendships with their students then took advantage of the situation, it is said. The most serious was a 30-year-old teaching assistant Laurie Hirsch who had sex 10 times with an 18-year-old former pupil she seduced on Facebook. The probe also found a male teacher ‘friended’ six female pupils and sent them graphic and lewd messages.A third man told one student via the read more