I don't think there should be any reference to god(s) outside a lesson teaching you about religion. In the UK, we have Religious Education, which is quite useful in educating people about various cultures, but it is nothing that couldn't be achieved in a "cultural education" class, with religion as a factor of a culture.
If more of us valued food and cheer and song above hoarded gold, it would be a merrier world. - J.R.R Tolkien