I believe that religion belongs with the family and whatever religious institutions that family is a member of. Our society is too diverse for any public institution to dictate or imply that a particular religious belief should or should not be practiced. At the same time, we need to make reasonable accommodation for individuals with bona fide beliefs that may require practices that are outside the mainstream of society.
Additionally, I recognize that certain social studies such as ancient world history, modern geography, and even certain aspects of world history, cannot be fully taught without recognizing the role that religions played in the development of civilization or in historical events.
One concept that has been raised recently is that of "intelligent design". I view this as an interjection of religious ideals into scientific enquiry, and will not support its incorporation into the science curriculum.