The Supreme Court of Canada Sikh students can carry kirpans, or ceremonial daggers, to schools and that the kirpans do not present an undue danger to others. The Court specifically held, "an absolute prohibition against wearing a kirpan infringes the freedom of religion of the student in question under s. 2(a) of the Canadian Charter of Rights and Freedoms (“Canadian Charter”). The infringement cannot be justified under s. 1 of the Canadian Charter, since it has not been shown that such a prohibition minimally impairs the student’s rights."

The opinion is available here.