The Corpora of the SCA has this to say about
Magic and Religion.
January 2004 version
Section III - Events
F. Policy on Religion
Having no wish to recreate the religious conflicts of the period under study, the Society shall neither establish
nor prohibit any system of belief among its members. No one shall perform any religious or magical
ceremony at a Society event (or in association with the name of the Society) in such a way as to imply that the
ceremony is authorized, sponsored, or promulgated by the Society or to force anyone at a Society event, by
direct or indirect pressure, to observe or join the ceremony. However, this provision is in no way intended to
discourage the study of historical belief systems and their effects on the development of Western culture.
Except as provided herein, neither the Society nor any member acting in its name or that of any of its parts
shall interfere with any person's lawful ceremonies, nor shall any member discriminate against another upon
grounds related to either's system of belief.