Oklahoma's state superintendent Ryan Walters defended his position on mandating public schools begin incorporating the Bible into lessons on CNN Monday.

State schools Superintendent Ryan Walters said Thursday that more than 500 Bibles had been purchased for Oklahoma public school classrooms. The announcement — which did not provide specific details about how the Bibles were procured or how much the books cost — is the latest in a flurry of moves by Walters as he works to elevate his national profile.