If you have reached this page, it is because you want to read more about the issues surrounding religion in public school. The following current event articles are a starting point for you as you seek out extra evidence to support your claim.
The Atlantic: Interview with Linda Weirtheimer, author of Faith Ed: Teaching About Religion in an Age of Intolerance
The Pew Forum: Religious Knowledge Survey and Results
Why Religion Should Be Taught in Schools
Teaching about Islam: Is it Indoctrination?
Another Perspective on the Tennessee Law to Ban Teaching About Islam
Video and Article: A Parent's Perspective
Teacher Criticized for Belittling Atheists in the Classroom