One of the outstanding characteristics of American secondary education is the emphasis that it places upon individual and social needs. Most educators endorse student extraclass activities as an important way to obtain program flexibility, meet individual needs, and attain desirable education objectives. Among the purposes of this publication are the following: (1) To bring together information to point up promising purposes; (2) To furnish school administrators with information to use as a guide to developing better local practices; (3) To suggest ways of organizing and administering certain activities; (4) To show benefits to pupil, school, and community from certain student activities; and (5) To highlight such values as early identification of pupils having special skills and interests, development of skills and understandings usable in later life, retention in school of pupils who otherwise might drop out, and development of a motivation for classwork. The following methods were used to prepare this publication: review of pertinent literature; correspondence with selected schools; school visitation and observation within a limited area; and interviews with leaders and other experienced persons in the three fields. This bulletin is divided into five chapters, as follows: (1) Some school implications of technological change; (2) Aviation as an extraclass activity; (3) Photography as an extraclass activity, (4) Radio as an extraclass activity; and (5) Summary of benefits to pupils, schools, and communities. A selected bibliography basic to school club activities is included. (Contains 27 footnotes.) [Best copy available has been provided.]