Within the past few years there has been a very remarkable increase in public school extension and the wider use of school buildings and equipment. This extension work has taken many forms, all of which, however, are intended to be supplementary to the regular school work. In order that records of this work may be kept and that teachers, school officers, and students of education may be able to compare the school extension work of one city with that of another, it is very desirable that there shall be some uniform system of records. Agreement upon the vital and recordable facts in school extension has not yet been feasible, because its activities are still so varied and unstandardized. With the maturing of after-school systems, however, programs will become more and more alike in fundamentals, and the ideas of administrators as to the facts that should be recorded will gradually approach agreement. Agreement among the authorities upon the recordable and desirable facts of school-extension work, which is the first step in the securing of uniform records, might have been sought by means of the questionnaire method. In deciding what kinds of data should be included in the suggested schedule about to be set forth, several principles believed to be of fundamental importance were adhered to. This bulletin contains the following: (1) Letter of transmittal; (2) Uniformity in record keeping; (3) Basic considerations; (4) The recordable and desirable facts; (5) Evening schools; (6) Afternoon extension activities; (7) Summary; (8) Suggested blank forms; (9) Uniform school extension record--Daily; (10) Monthly record sheet; and (11) Uniform school extension record--Monthly. Appended are: (1) Bureau of Education school extension questionnaire; (2) Directions for use of the daily uniform school extension record; and (3) Directions for use of the monthly uniform school extension record. (Contains 5 tables and 3 footnotes.) [Best copy available has been provided.]