http://news.bbc.co.uk/2/hi/europe/3149588.stm

"The same rules apply to Jewish skullcaps and Catholic crucifixes. But there have been no public incidents triggered by students insisting on wearing skullcaps or "ostentatious" crosses. There are many private Jewish schools in France, where skullcaps can be worn, but only two such Muslim schools. "

http://www.wwrn.org/parse.php?idd=9659&c=27