Please, please call social services, the police, the NSPCC or the school - ideally the school and social services or NSPCC. I personally would call the police like a shot. I feel like Avenger Mummy sometimes. The other day (boiling hot) I saw two young children alone, locked in a car, the youngest just a baby. No car seats. The window was only slightly open and the baby was crying. I called 999 from my mobile straight away - didn't hesitate. Only left when the police pulled up by the rather surprised father who had finally returned. Also told a man in a shop (he worked there!) to come out and tend to his child (again, left alone in a car, crying, and had been there some time) and gave him a bollocking to boot. I think we all have a duty to children who can't protect themselves. Rant over. Please call someone.