A technique to measure the quality of agricultural extension programs by the clientele was developed and tested. The study was conducted in three major steps. First, unstructured interviews of forty-eight farmers and agribusiness persons in seven Ohio counties were conducted to identify those factors they considered when evaluating their county's extension agricultural program. The forty-four factors were identified and were categorized as methods, personal qualities of the agent, and quality of extension information. Second, a questionnaire was sent to 248 farmers asking them to rate the importance of each of the forty-four factors. Based on a factor analysis of the responses, a questionnaire was developed which consisted of forty-three factors classified in the following four subscales: information, extension agents, extension methods, and educational program. During the third and final step of the study, the questionnaire was sent to 400 farmers and agribusiness persons in eight counties while six extension professionals, using a paired-comparison procedure, rated the quality of the programs in the same counties. The results of this last step indicated that the instrument and the subscales are reliable. It is recommended that the instrument be used by others, both as an evaluation tool and for further research. (The questionnaire is attached.) (EM)