In contrast to limits on dress as a means to providing a safe learning environment, school dress codes, in most cases, cannot be used to prevent students from expressing their religion beliefs. Both the Constitution and most state laws protect students’ rights to wear religious attire inool school, such as the wearing of a turban, yarmulke, or head scarf. - See more at: http://education.findlaw.com/student-rights/school-dress-codes.html#.dpuf