The study examined the impact of socio-emotional adjustment on academic achievement of adolescent girls of Jammu and Kashmir. The purpose of the investigation was to study the relationship and effect of socio-emotional adjustment on academic achievement among adolescent girls. The descriptive survey research method was used for the study and the sample of 250 participants were randomly selected from ten higher secondary schools. The socio-emotional adjustment scale developed by Najam and Simeen (1991) adopted and revised by the investigator, and the academic achievement of previous year examination was used. The finding of the study revealed that: (1) there is a positive and significant correlation between socio-emotional adjustment and academic achievement of adolescent girls; (2) The socio-emotional adjustment of adolescent girls has a significant effect on their academic achievement; and (3) there was significant difference between rural and urban adolescent girls in their socio-emotional adjustment.