text:  It's the new rule in Oklahoma public schools. Every teacher, every classroom in the state will have a Bible in the classroom and will be teaching from the Bible in the classroom. That's Ryan Walters, the state superintendent of public instruction. That directive effective immediately for 5th through 12th grade classes. He calls the Bible a necessary tool to teach about history. Legal challenges are expected. This comes after the state of Louisiana mandated posting the Ten Commandments in every school classroom.