The present study aimed to see the effect of locale and sex on Academic performance, For this purpose 945 students of 10th standard studying in different Government schools of Rajnandgaon district of Chhattisgarh State were randomly selected. In the present study the sample were selected from rural and urban locale. To measure the academic achievement of the student, the overall marks obtained by the student in different subjects (viz-Hindi, English, Mathematics, Science, and Social Science) in annual examination is used. The dependent variable of the study is academic achievement and independent variables were locale and sex. The ANOVAs analysis reveals that locale and sex Play significant role to determine Academic achievement of the students.