The principles of regionalism supply an element of realism which has been lacking in the diagnosis of our educational leaders. Nevertheless, students of regionalism well know that such a central authority has often been assumed or aspired to by a process familiar in American history. The entire common school and high school system of the United States has in fact been planned and from time to time revised from blue prints which, on the whole, have in view Eastern and metropolitan problems of education, and not the scattered educational problems of diverse America. Although regionalism is sometimes called a theory, and sometimes a literary movement, it could better be taken as the new name for a process of differentiation within geographic limits that is as old as the American republic and perhaps was predestined in the settlement of our continental area.