The relationship between internalizing and externalizing problem with academic achievement of children was assessed. The children in late childhood (8-12 years) studying in class 3, 4, 5 and 6 from Dharwad and Wokha regions constituted the population of the study. A sample of five each peer accepted and rejected from each class with a total of 160 children each from Dharwad and Wokha were drawn from two government and two private schools through sociometry. Teacher’s Report Form (TRF) given by Achenbach and Rescorla (2001) was used to assess behavioural problems of the children and the averages of the percentages of marks in the previous two years were considered for the academic achievement. The results revealed a significant relation between the behavioural problems and academic achievement of children of Dharwad while it was not significant in case of Wokha region. Early identification and prevention of problematic behaviour is also very essential for promotion of academic success.