This study aimed to raise the effectiveness of On-the-Job Training Program for teachers. It was done by using quasi experimental method. To measure variables pretest –posttest design with control group was used. The population consisted of On-the-Job Training courses for teachers from Lamerd town which were held in 2012. By using convenience sampeling method 3 samples were selected which were registered in the course of October 2012. The course effectiveness was evaluated by using three variables including satisfaction and attitude of the learners as well as amount of their learning. The data gathering tools were a satisfaction-attitude questionnaire and the Course-Test. The content validity was used as a validation tool. The reliability was measured by using Cronbach’s alpha and cooder Richardson method. The results show that On-the-Job Training course was effective in systemic and constructive problem-based environments, and the second one was more effective.