PC Simon Towers's beat is Chipping Norton School in Oxfordshire. One of a new breed of school-based police officers, he is a friend, confidante, adviser and teacher as well as a law enforcer. His job may call on him to deal with violence, vandalism and petty crime - but is more likelyto involve anything from helping pupils cope with the death of a classmate to catching a South American rhea that escaped from a local farm. Producer Sara Parker