The aim of the present study was to findout the effect of Social Maturity, Self-Concept and Adjustment on Academic Achievement of Secondary School Students in District Budgam of Kashmir valley (J&K). The sample for the study was comprised of 200 secondary school students. Out of 200 total sample, 100 will be male secondary students and 100 will be female secondary students were selected through randomly sampling technique from different government secondary school of District Budgam (J&K). Social Maturity Scale was standardized scale prepared by Dr. Nalini Rao. Sagar and Sharma’s Self-Concept Inventory has been developed Sagar and Sharma (1971). Academic Achievement assessed by the aggregate Marks obtained by the subjects in previous two exams served as measures of academic achievement. The results of the study revealed that there is a positive relationship between social maturity and academic achievement of secondary students and it was also found that there is a positive relationship between self-concept and academic achievement of secondary students. It was also found that better social maturity possesses higher academic achievement and higher the self-concept possesses better academic achievement.