The Open University of Great Britain relies heavily on broadcasting as a mode of instruction. Because increased course offerings have made program scheduling a problem and because production costs have risen sharply, a survey was conducted to determine the use patterns of students so that the system's resources could be allocated in the most efficient manner possible. Nearly 13,000 of the school's 45,000 enrolled students were surveyed by mail. The response rate was high, and the results provided data on: 1) student viewing and listening time; 2) student ratings of broadcasts; and 3) factors influencing the viewing and listening times. These results facilitated a discussion of the best allocation of broadcast time. The text provides a detailed discussion of the survey design and tabular summaries of the data. (EMH)