This article really gets at the heart of the issue:
Indoctrination in a faith should take place at home; in a church, mosque, synagogue, temple; at Sunday school, or in religious schools. Children should not be segregated in public schools to be instructed by volunteers in a particular religion; to be taught the Bible as historical fact, for instance, or that they will burn in hell, or that ”Hindus are cows” – as a non-Christian religious instructor was heard telling his class.
It is more important than ever for children to see the commonalities underlying various religious beliefs and ethical codes, as well as the differences. We are a multicultural, multi-faith society and we need to understand each other better.