French schools in France/French territories don’t have uniforms. But they ban any form of group/gang/religious symbols.
That included my baseball hat with a team logo on it. We actually had uniforms but that was due to the local country imposing it on the French school. France has set up French public schools all around the World.
I’m not saying I fully agree with their approach but they are consistent in their policy and not targeting any single religion/group.