The objective of the study was to investigate the job satisfaction of both government and private primary school teachers in performing curricular and co-curricular activities. A sample of 100 primary school teachers 50 each from government and private primary schools was selected purposively from Sambalpur district of Odisha. A Job satisfaction questionnaire for teachers prepared by the investigator was used to collect data. Statistical analysis using simple percentage revealed that i) teachers working in government primary schools were highly satisfied in their job than teachers working in private primary schools relating to the appointment, applying teaching skills in classroom and training facilities before entering the job and during the job; ii) teachers working in both government and private primary school were highly satisfied with their classroom teaching skills whereas, no differences were found in job satisfaction of both government and private primary school teachers relating to classroom teaching; iii) both government and private primary school teachers were highly satisfied with their teaching style that increased students’ achievement; iv) teachers working in government primary school teachers were more satisfied in their job than teachers working in private primary school relating to evaluating system. There found difference in job satisfaction of both government and private primary school teachers relating to evaluating system; v) both government and private primary school teachers were highly satisfied in their job relating to the organization of curricular activities in schools; vi) both government and private primary school teachers were highly satisfied in their job relating to the staff members’, Headmasters’/Headmistress’ and students’ cooperation to organize co-curricular activities by engaging themselves in the organization of different functions in schools.