THE RESULTS OF THE SECOND YEAR (1957-58) OF AN EXPERIMENT IN OPEN CIRCUIT INSTRUCTIONAL TV ARE REPORTED. THE OBJECTIVE WAS TO COMPARE PERFORMANCES AND ATTITUDES OF 3 GROUPS OF STUDENTS--(1) TV INSTRUCTION AT HOME, (2) TV INSTRUCTION ON CAMPUS, (3) CONVENTIONAL INSTRUCTION ON CAMPUS. THE EFFECTIVENESS OF OTHER TEACHING METHODS, DISCUSSION, DEMONSTRATION, AND LIBRARY ASSIGNMENTS, WAS ALSO CONSIDERED. ALL GROUPS WERE TAUGHT BY ONE PROFESSOR. STUDENT POPULATION INCLUDED REGULAR COLLEGE STUDENTS, SELECTED HIGH SCHOOL STUDENTS, SELECTED PRISON INMATES, AND ADULTS AT LARGE. COLLEGE COURSES IN SCIENCE, PSYCHOLOGY, SOCIAL SCIENCE, ENGLISH, AND CREATIVE ARTS, PREPARED BY SAN FRANCISCO STATE COLLEGE PERSONNEL, WERE BROADCAST OVER KQED. CONTROL MEASURES USED WERE ACADEMIC APTITUDE, GRADE POINT AVERAGE, CONTENT ACHIEVEMENT, AND MOTIVATION. RESULTS SHOWED THAT ACADEMIC GAINS OF STUDENTS TAUGHT BY TV COMPARE WELL WITH THOSE OF CONVENTIONALLY TAUGHT STUDENTS IN ALL SUBJECTS BUT CREATIVE ARTS. STUDENTS GENERALLY ACCEPTED TV AS AN INSTRUCTIONAL MEDIUM. HOME VIEWERS WERE MORE POSITIVE THAN CAMPUS VIEWERS. SUGGESTIONS ARE MADE FOR THE EFFECTIVE USE OF INSTRUCTION VIA TV IN COLLEGES. COST DATA ARE GIVEN. (MS)