This resource book contains practical advice on all aspects of correspondence study, contributed by countries in which correspondence teaching has become an integral adjunct to the regular educational system. Included are discussions of school organization; writing, editing, and correction of studies; cost of production of materials; school equipment; the role of instructors; and the coordination of correspondence teaching with oral, audiovisual, and programed learning devices. Appendixes include sample lessons in composition, techniques of lesson writing, course introductions, guidance for practical work, course review work, general principles for writers of courses, examples of effective illustrations, corrected correspondence lessons, examples of material sent to newly enrolled students, methods for postal dispatch, population taught by correspondence, and a bibliography. (pt)