Well I'll just start by saying that I agree with Florin. And Humus:
The french view is wrong cause it violates the human rights of freedom of religion and freedom of speech.
Constitution comes first, majority second.
In France, the constitution gives the state the right to stop any religion from interefering with state governed institutions.
I'll skip repeating what Florin's already said and go directly to my conspirational theory which I thought about after first hearing this. Democracy is really just turning into the new age religion of the western world, eventually replacing what we know as religion today. We're only allowed freedom within a democracy as long as it doesn't go against democratic values, just as people in Iran are free and have equal rights, as long as they don't go against the teachings of the Koran. We've already replaced religion with democracy in school as being the 'right' thing and how we all should live. We don't wage war in the name of god, but rather in the name of democracy. Nations call themself democratic while still having severe lack of equality between gender, race, culture, age and the list continues. Pretty much the same as nations have used religion as a means of being the 'good guy', but still abusing their citizens in the name of god. Democracy as we know it today really is a westernized concept, and we assume that it's the best thing for everyone because, well, we simply are superior and know better than everybody else. Who cares that people of different parts of the world have differing cultural heritage and social capital. Since democracy is the ideal system for us, and we obviously know better than everybody else, then lets just spread democracy as the new religion, since that's what it essentially is.
-end rant-
And if we go back to France again, exactly why should we allow religious symbols when we don't allow all kinds of political symbols? In reality, both are a matter of choice, and I don't see how anyone really can rationalize discriminating one kind of belief -politics- while allowing another -religion-. I've read plenty of democractic definitions and almost none which is newly written specifically mentions religious freedom as a human right, although it's still written in pretty much everyones constitution. When religion starts interfering with democratic rights, in this case education, I don't see why you wouldn't be allowed to stop it.
Democracy is after all pretty much a bullshit system where it's incredibly easy for contradictions to pop up. There are loads of situations where you'll have to chose between discrimination and going against the concept of 'one person, one vote'. That, obviously, doesn't have mean that I think we should go back to oligarchy or monarchy, just that I'm getting kinda tired of people hailing democracy as the ultimate system and claiming that some things are undemocratic, when in reality it depends on from what direction you're looking at it. And yes, I fall into that trap all the time too
[disclaimer] I don't necessarily agree with everything I write all the time, I just enjoy observing heh.
Edit: Tried to clear some stuff up and some stuff which came out wrong, which isn't easy hehe.