Oklahoma State Superintendent Ryan Walters did not reject the idea of a national mandate to require Bibles in schools on Tuesday night when asked if he would implement the policy if selected as the next education secretary.

Oklahoma State Superintendent Ryan Walters announced the purchase of 500 Bibles for AP Government Classrooms, the first purchase in the nation of Bibles for the purpose of using them explicitly as an academic and literary resource.

Donald Trump’s potential education secretary pick has floated the idea of a national mandate to require Bibles in classrooms. Oklahoma’s chief school official Ryan Walters, one of the names rumored to be in the running to become the next education secretary,