The present study has been designed to investigate the non-cognitive variables like anxiety, emotional maturity and social maturity and their relationship with academic achievement and also to see the locale-wise differences on the basis of their anxiety, emotional maturity and social maturity. The study was conducted over a sample of 400 (200 rural and 200 urban) high school students studying in Xth class in 8 different schools (4 urban and 4 rural) affiliated to C.B.S.E, New Delhi. Dr Nalini Rao's Social maturity scale, Singh & Bhargava's Emotional maturity scale and Sharma's General Anxiety Scale for Children, were employed to measure students' social maturity, emotional maturity and anxiety. The aggregate score of the selected students in the C.B.S.E. board examinations was taken to show their level of academic achievement. The results reported that there exists a significant relationship between social maturity and academic achievement as well as between anxiety and academic achievement. No significant relationship is observed between Emotional maturity and academic achievement. Rural and Urban high school students differ significantly in their level of anxiety whereas no significant difference was found between them on the variables of Emotional and Social Maturity.