The girl was trying to set a legal precedent by having her right recognised by the court, now the next time someone decides to take a similar case there is a precedent to be referred to which is negative and without legislation it will be hard to have this changed. For all the talk of tolerance she will not be able to continue at school there without changing her religious principles, some attempt to suggest that there is someone in the background pushing her to press the case, well thing is if you read the whole story you would see that she got more devout after her mother died.
This is an attempt by the British extablishment to suppress further public shows of the Islamic faith similar to what has been done in France. This is a clear violation of her human rights, unless it is a private school they should change to meet the need.
If someone from a new religion joins that wears should they be forced to wear the Shalwar Kameez, the normal uniform or should they change the rules to allow inclusion of the new dress code that this student brings with them for religious reasons? same thing.