This the First Amendment forbids. Third, the Policy violates the fundamental First Amendment principle of content neutrality by discriminating against certain groups and activities on the basis of beliefs and ideas, such as by permitting students of traditional faiths to wear and display their religious symbols while prohibiting students of non-traditional faiths from wearing and displaying their religious symbols. The Establishment Clause requires that the government must pursue a course of complete official neutrality toward religion. The government cannot act in such a way as to favor one religion over another religion. By its terms, the Policy expressly favors traditional religions, such as Christianity, over non-traditional religions, such as the Wiccan religion.
Christian students can form Christian student organizations and can wear a crucifix to school.
Wiccan students cannot form Wiccan student organizations and cannot wear the Pentagram, the symbol of their religious faith, to school. A more egregious violation of the Establishment Clause principle of complete official neutrality toward religion cannot be imagined. The prohibition on the plaintiff's wearing of the Pentagram as an expression of her Wiccan religious beliefs also violates her rights under the First Amendment Guarantee of Free Exercise of Religion. This prohibition is specifically directed against the plaintiff's religion and her religious beliefs, and its only purpose is to discriminate against the plaintiff because of her religious beliefs. For this reason, it clearly violates the First Amendment's Free Exercise Clause.