Welcome to the Rethinking Schools Archives and Website Become a subscriber to read this article. Already a subscriber? Log in here. Preview of Article: The Proving Grounds School 'Rheeform' in Washington, D.C. By Leigh Dingerson Illustrator: Randall Enos To read the rest of this article: Become a subscriber to read this article. Already a subscriber? Log in here. Purchase PDF of this Article Included in: Volume 25, No.1 Fall 2010