An interventional study was conducted to assess the effect of information booklet to primary school teachers on the identification of common behaviour problems among children, at Sri Ramakrishna Matriculation higher secondary school. One group pre-test post-test pre-experimental design was used to conduct the study. Using purposive sampling technique, 30 primary school teachers were selected for this study. Level of knowledge was assessed using a structured questionnaire before the intervention. An information booklet was administered by the researcher to the teachers after the pre-test. Four days later, the level of knowledge was reassessed by using the same tool. The obtained data were analyzed using paired ‘t’ test. It was identified that the mean pre-test level of knowledge regarding an identification of common behavioural problems was 10.3 with a standard deviation of 3.368 and the post-test level of knowledge was 13.4 with a standard deviation of 2.307. The mean difference between pre-test and post-test scores was 3.1. The calculated ‘t’ value was 4.968, which was greater than the table value at 0.05 level of significance. The results revealed that administration of information booklet was an effective intervention in improving knowledge of primary school teachers on the identification of common behaviour problems among children.