The purpose of present study was to know the adjustment level of adolescent students studying in Govt. and Non Govt. Senior secondary schools of South Haryana. The study was conducted on 600 (300 male +300 female) adolescent students of Senior Secondary Schools of South Haryana. Adjustment Inventory developed by Dr. A. K. P. Sinha was used to measure adjustment level. The results of study show that there is no significant difference in anxiety level of students of Govt. and Non Govt. Senior Secondary Schools. It was found that there is no significant difference between the adjustment of adolescent students of govt. and the non govt. senior secondary schools. It is also found that there is a significant difference between the adjustment of adolescent male and female of students of govt. schools at significance level 0.05. Adolescent female students of govt. and non govt. senior secondary schools have significant differences in adjustment level.