Conservative religious values versus secular values

In an article by Kishore Mahbubani, "The virtues of secularism" which appeared in The Straits Times Page A22, 20 May 2009, he argues that "Logic travels well across culture and languages."

"Imagine that there is a religious organisation in Singapore which believes that it is immoral for teenage girls to be forced to expose their arms, legs and faces when they go to school. They say: 'There's a line that God has drawn for us, and we don't want our nation crossing that line.' Hence, since the teachers of Singapore are enforcing the rule, this religious organisation marshals its members, takes over the Singapore Teachers' Union and uses it to advocate the argument that female teenagers should be 'free' to choose whatever dress they want to wear to school. They argue that it is wrong to impose the corrupt Western school uniforms on young women of their religion.

Please note that the above is not a hypothetical example. This argument over school uniforms has been played out in France. Should we allow this to happen in Singapore too?"