A school turned a father away from his son's first sports day after banning parents who have not been checked by police from mixing with pupils.
The taxi driver had gone to watch his son, a year seven pupil, compete in sprints and egg-and-spoon races.
But teachers refused to let him spectate because they did not believe he had undergone checks by the Criminal Records Bureau.
Rather than argue, the 'mortified' father left quietly so he would not embarrass his son as he took part in the games at the 1,200-pupil De Lisle Catholic Science school in Loughborough, Leicestershire.
The school's policy says that any parent who has not passed the checks is banned from attending events in which pupils take part. The rules are aimed at shielding children from paedophiles.
But critics say they have gone far beyond their original remit. For example, parents picking up groups of children from school or hosting foreign exchange pupils have to undergo checks or face fines.
Watching a sports day is quite a different matter from hosting an exchange student in your home. Common sense has been thrown out the window.