Learning, development of technology and adoption of new agricultural methods would have great impact upon peasant productivity more specifically upon subsistent farmer’s status. This study aims to investigate the impact of agricultural extension program upon the performance of wheat producers in Kermanshah. Research statistical society includes 186 of wheat farmers who participated in the schoolfarm program as well as 3897 who did not take Part in the program.Random samplingtechniques were applied.Viability and creditability of the research tools were determined via faculty members of Razi’s agriculture training extension centers as well as Kermanshah provinces agriculture and Jehad organization. Preliminary test and credibilityof questionnaire were done via Kronbakh85%. This study suggests that implementation of farm schooling in the study area had prominent impact upon knowledge level and income of the farmers.According to T testresults, there exists a significant differences between participant and non-participants farmers as far as the level of education and irrigated lands is concerned. Taking into account their communicative characteristics of wheat growers that is the contact of farmer with extension agent,participation in school program,neighboring farmers as well as local key figures recommendations were very influential factors. Correlation regression analysis results indicate that biological knowledge based variables ,level of education,contact with extension agent, the usageof mass media,and finally the amount of irrigated lands all could explained 73.4 percent of the variations