A French school expelled three Sikh students for wearing turbans.
The French secularity law, primarily aimed at stemming the growing numbers of Muslim girls wearing headscarves in school, came into force at the beginning of September.
It prohibits the wearing of religious symbols and also banned Christian crosses and Jewish skullcaps.
Sikh males wear turbans to control their hair, which their religion requires them to leave uncut. Most French schools let Sikhs wear a smaller turban. The Elysee Louise Michel north-east of Paris segregated the turban-wearing Sikhs when school started in September, forcing them to study from worksheets in the cafeteria, and expelled them on Friday.
A dozen or more Muslim girls have been expelled for covering their hair.