Every great war in which the United States has played a part has been followed by educational developments of supreme national importance. As the result of the Revolutionary War the Federal Government acquired a vast public land domain from which it has carved generous grants to the States. Those became the foundation of systems of free public schools in no less than 30 states. The constitutions drafted by one State after another following the Civil War are eloquent with evidences of a newly created faith in public education. Although the lapse of more than half a century still finds educational provisions in the South far from adequate, the fact remains that not only in the South but, in the North, the Civil War was followed by educational efforts and movements amounting almost to a renaissance. Although the United States was engaged in the World War less than two years, the effects upon education resulting from this brief period of warfare will perhaps prove to be as far-reaching and as important as those growing out of any previous war. The following are contained in this bulletin: (1) Educational developments following the great wars; (2) Growth of school costs; (3) Building Expenditures; (4) Federal Policies in Public School Finance; (5) State Policies in Public School Finance; (6) A New Conception of State Aid; (7) Reforms in Apportioning State School Funds; (8) Need of New Sources of Revenue; (9) Declining Importance of State Endowments; (10) New Sources of State School Revenue; (11)Tendencies in Local Support, County and District; and (12) The Present Situation. (Contains 3 tables and 7 footnotes.) [Best copy available is provided.]