More than 30 parents, teachers and faith leaders filed a lawsuit in the Oklahoma Supreme Court Thursday over State Superintendent Ryan Walters’ directive to require Bibles in every classroom and to use them as an instructional resource.

Petitioners behind the lawsuit include religious leaders, public school teachers and parents in Oklahoma who argue the measure is harmful.

A group of Oklahoma parents, teachers and ministers are suing to stop the state's top education official from forcing schools to incorporate the Bible into their lesson plans