A 16-year-old girl has gone to the High Court to accuse her school of discriminating against Christians by banning the wearing of "purity rings".
Lydia Playfoot was told by Millais School in Horsham, West Sussex, to remove her ring, which symbolises chastity, or face expulsion.
She says Sikh and Muslim pupils can wear bangles and headscarves in class.
The school denies breaching her human rights, insisting the ring is not an essential part of the Christian faith.
BBC News religious affairs correspondent Robert Piggott said a group of girls at the school were wearing the rings as part of a movement called the "Silver Ring Thing" (SRT)....
