Andrew Copson, chief executive of the British Humanist Association, said: “We are contacted every week by parents with complaints and concerns at their children experiencing proselytising in school, with children as young as four coming home and telling their non-religious parents they believe in God, or being distressed at age-inappropriate tales about hell, or feeling excluded from a part of school life after having been opted out by their parents who for reasons of conscience have had no other choice.