The Constitution allows for students to pray in schools. It's you Liberals reinterpreting it that has changed. The founders had a whole different idea of separation of Church and State.
For instance the first Bibles published in English were published by the United States Congress.
On the very first day day they held an assembly in Congress they had a prayer that had to of lasted 3 hours.
Look these things up. Were not the uninformed dweeps like your Liberal friends. We know our history.