Under U.S. law, religious education is forbidden in public schools, except from a neutral, academic perspective. However, in a minority of communities, released time is granted once a week to make religious education more convenient without violating the separation of church and state. For a teacher or school administration to endorse one religion is considered an infringement of the "establishment clause" of the First Amendment. The boundaries of this rule are frequently tested, with court cases challenging the treatment of Eastern religion meditation programs for students, traditional religious holidays, displays of religious articles and documents such as the Ten Commandments, the recitation of the Pledge of Allegiance (which since 1954 has described the U.S. as "one nation under God"), and whether prayer should be accommodated in the classroom.