The article analyses relations which public politics of education were able to establish during the 1920's from Rio de Janeiro city with regard to scholar knows and educative practices, using officials data about instruction reforms in the 1920's from Rio de Janeiro. It examines political and social dimensions of instruction reforms, discusses problems involved in establishing criteria to define strategies of action in public system of education and other historiography tendencies related to the theme. Finally, this paper lists perspectives opening at those reforms.
History of education; Public instruction; Educational reform