"Several parents recently pleaded with a Quebec Superior Court judge to uphold the province's religious symbols ban to shield their children from exposure to the hijab, which they believe conveys a "pernicious" sexist message. The witnesses testifying in support of the law, known as Bill 21, said they believed the hijab always represents sexist values, regardless of why someone decides to wear it. The parents, all immigrants from Muslim-majority countries, are the first witnesses to be called by defenders of the Laicity Act in a court case brought by opponents of the law who say it is unconstitutional. Among the most controversial provisions in Bill 21 is a prohibition on public teachers from wearing religious symbols at work."

Atheist Republic community

Bill 21 [en.wikipedia.org]

I see no reason why a School or any other work place should not have a uniform code that includes religious or cultural symbolism in the work place being disallowed.
When I was Christian I was subject to this type of rule sometimes even down to not wearing wedding rings where they might constitute a danger. I certainly understood when asked not to wear a cross around my neck or in my ear.

It is also illogical to object to not wearing an hijab on religious grounds when it is not religious, but cultural and was originally like the turban in he east and plaiting hair in the west to prevent the spread of head lice.

What are your thoughts?