This report contains forty papers presented at the tenth international conference of the International Council on Correspondence Education. The conference theme is described as one analyzing educational and administrative sub-systems and components, with reference to their purposes, significance, characteristics, interrelationship, and cost effectiveness. Also addressed are the implications of these functions for the evaluation of distance education programs with respect to information counseling, student activities, and two-way communication and, on the other hand, marketing and management. Papers in the first of four sections explore the system of distance education. For example, Renee F. Erdos describes "The System of Distance Education in Terms of Sub-Systems and Characteristic Functions." Section 2 focuses on the modes of teaching in distance education. A sample offering from this section is John Cain's "Mass Media--Educational Television and Radio." Section 3 reviews distance education and the open learning trend; for example, one selection by Paul Chang Min Phang deals with "Planning and Administering a University Off-Campus Academic Programme in a Plural Society." In the final section student service, student activity, and two-way communication are examined. For instance, in this section David M. Young discusses the "Characteristics of Informative Publicity Material and the Pre-Enrolment Correspondence." (CSS)