This report is not a complete survey of educational extension in the United States. The limitations of time, space, and cost forestall a complete detailed statistical review of the work of the past biennium. A full account in detail would require visits to every Commonwealth, a very large expenditure of time and money, and a report of several volumes. Consequently, no attempt has been made to include all institutions, to summarize all statistics, or to describe fully every form of extension activity of every organization. At best, a mere bird's-eye view can be given, but with sufficient clearness and completeness, it is hoped, to warrant these conclusions: (1) That the demand for popular education to include "all the people" is rapidly growing and will soon manifest itself in statewide programs, for all citizens of all occupations and all ages--men, women, and children--who cannot secure formal instruction within the schools and colleges as now organized; (2) That notwithstanding the remarkable increase in enrollment in secondary schools and colleges, extension teaching has been the outstanding feature of educational effort in this country in the past two years, and in growth has far surpassed any other phase of educational development; (3) This growth is not ephemeral but substantial. Higher standards are being set and maintained, and those engaged in the older types of instruction are more readily and more fully recognizing, appreciating, and crediting the work which is being done. Educational extension for the purposes of this report is defined as any effort made by any educational institution or organization for the purpose of carrying its instruction, no matter of what character, to groups of people or individuals who cannot avail themselves of such instruction in the regular prescribed method of such institution as resident students. It is concerned chiefly with adults, being in fact the chief instrument for developing adult education. [Best copy available has been provided.]