Blueskies - I wouldn't count on that. My DC's currently attend a Community School, and the local vicar comes and does sermons assemblies on a very regular basis.
My DS1 upset the HT when, in one assembly, they were asked if they had any questions, and my DS1 asked why, if they were taught to only believe what they had proof of in science, and that anything else was a hypothesis, why should he believe in God without any proof..."
He also asked why the school explained to them in science that the universe was created during the Big Bang, yet then invited in the local vicar to preach about how God created the world, and did the HT not see that as a little confusing and contradictory for the DC's...
My DS1 is a git when it comes to religion. His description of religion? Something dreamed up by man to explain scientific phenomena before science had caught up and found the real reason, it's just a construct to allow people who didn't have scientific answers to their questions to feel a bit if peace, it's no different to having an imaginary friend"
Gah.