Teachers always play a vital role in the development of the society and the nation at large. They are accorded recognition due to their manipulative skills in igniting the inherent talents of the children. The successful running of any educational system depends mainly upon the teacher, the pupil, the curriculum, and the available facilities. Out of these, the teacher is the most important one and is the pivot on whom the entire educational structure rests. Teachers, who are happy with their job, find satisfaction in their lives and hence play a vital role in the process of strengthening the society they belong (Lavingia, 1974). Hence, job satisfaction of teachers is not only important for themselves, but also for the students and as well as the institution and the society they belong. Based on this, a study is conducted by taking a sample of 100 teachers working in different secondary schools of English medium and Telugu medium belonging to Anantapur district of Andhra Pradesh were taken to investigate the problem. Job Descriptive Index developed by Hulin, Kendall, and Smith (1969) was used to measure Job Satisfaction. Data were analyzed using mean, S.D, t-test and F-ratio. The results revealed that: 1. There is no significant difference in the job satisfaction of secondary school teachers belonging to various monthly income groups and 2.There is no significant difference in the job satisfaction of secondary school teachers belonging to a different medium of instructions.