Self – concept is evident from self awareness, which refers to the extent to which self- knowledge is defined, consistent, and currently applicable to one’s attitudes and dispositions. Therefore, the present study was aimed at studying the self – concept among teachers working in Government and Missionary Schools with particular reference to North Bihar. To measure the differences between Government and Missionary Schools teachers in terms of their degree of perceived reactions on self – concept, total sample consisted of one hundred fifty (N=150) which were randomly selected from different Government and Missionary Schools located at North Bihar, viz., Begusarai, Darbhanga, Madhubani and Samastipur. These are well – known towns of North Bihar. Total sample comprises Government School teachers (n=75) and Missionary School teachers (n=75). Total respondents’ age were ranged between 31 to 58 years of age. Having collected the information on the problem through questionnaire schedule, the data were tabulated as per norms of the schedule for giving statistical treatment. Obtained results indicated significant differences in terms of teaching employees’ perceived reactions on self - concept between the group of Government School and Missionary school teachers from where the present sample has been drawn. It is important to mention here that the self- concept among Missionary school teachers was found significantly high in comparison to the perceived self – concept of Government school teachers. Moreover, out of six dimensions of self-concept four dimensions, viz., ‘Behavior’, ‘Physical Appearance and Attributes’, ‘Anxiety’, and ‘Happiness and Satisfaction’ have been found significant predictors between the group of Govt. school and Missionary School Teachers. Finally discrepancy of obtained results has been discussed in detail