<P> School prayer, in the context of religious liberty, is state - sanctioned or mandatory prayer by students in public schools . Depending on the country and the type of school, state - sponsored prayer may be required, permitted, or prohibited . Countries which prohibit or limit school prayer often differ in their reasons for doing so: In the United States, school prayer cannot be required of students in accordance with the Establishment Clause of the First Amendment to the United States Constitution . In Canada, school - sponsored prayer is disallowed under the concept of Freedom of conscience as outlined in the Canadian Charter on Rights & Fundamental Freedoms . School - sponsored prayer is disallowed in France as a byproduct of its status as a laïcist (religiously neutral) nation . Countries that allow or require school and other state - sponsored prayer include Greece, Saudi Arabia, Iran, Australia, Italy and the United Kingdom . </P> <P> In the United States, public schools are banned from conducting religious observances such as prayer . The legal basis for this prohibition is the First Amendment to the United States Constitution, which requires that </P> <P> Congress shall make no law respecting an establishment of religion, or prohibiting the free exercise thereof...</P> <P> The first part of the amendment ("Congress shall make no law respecting an establishment of religion") is known as the Establishment Clause of the First Amendment, while the second part ("or prohibiting the free exercise thereof") is known as the Free Exercise Clause . </P>

When did they stop teaching religion in school