Does anyone know any good sites for statistics on prayer?

Question

Such as how many Americans pray on a daily basis, how important it is to them, how many think it should be implemented in publics schools

Answer 1

The Catholic Church agrees with the U.S. Constitution as currently interpreted by the U.S. Supreme Court and does not support "structured" prayer in public schools.

In the Vatican II document, DECLARATION ON RELIGIOUS FREEDOM, DIGNITATIS HUMANAE (Human Dignity), the Church states:

The human person has a right to religious freedom. This freedom means that all men are to be immune from coercion on the part of individuals or of social groups and of any human power, in such wise that no one is to be forced to act in a manner contrary to his own beliefs, whether privately or publicly, whether alone or in association with others, within due limits.

Children will continue to privately pray before tests just like they always have.

With love in Christ.