Joseph Knippenberg of Oglethorpe University has been increasing his profile lately, first through the Ashbrook Center's blog "No Left Turns" and more recently as a columnist for The American Enterprise. Dr. Knippenberg's recent piece for TAE on the Cobb County textbook controversy shows why his work is becoming better known. He has the unusual knack of actually informing through opinion pieces.
I'd give you a snippet, but it just wouldn't do justice to the overall argument. As Instapundit likes to say, "Read the whole thing." You'll come out understanding religion in the public square a bit better than you did before.