Oklahoma Superintendent of Public Instruction Ryan Walters got into a heated back-and-forth with CNN host Pamela Brown over public schools using the Bible in lessons.

While Bible-based lessons will not be mandatory, schools that incorporate them will receive additional funding. Boosters say the Bible is a core feature of American history, while critics point out the lessons will alienate students from other religions.

More than 500 Bibles have been purchased for use in Advanced Placement AP Government classrooms across the state of Oklahoma