"It's interesting to note[...]."
Well, it would be interesting if actually true. Personally, I've never heard any 'free thinkers' suggest such a thing - in fact, I've very much heard the opposite.
Even Dawkins has repeatedly said the complete opposite, stressing the importance of teaching comparative religion; "[A]n atheistic world view provides no justification for cutting the Bible, and other sacred books, out of our education."
One's appreciation of English literature would be destroyed at a stroke without an appreciate of the Bible as literature. One's understanding of other cultures would be impossible without an understanding of their religions.
The only time I have ever seen anyone call for something to be banned from the classroom, it has been strictly limited to the removal of creationism/ID from science classes and using the exact same rationale as to why Parseltongue doesn't get taught in langauge labs.