Background: Attention-Deficit Hyperactivity Disorder (ADHD) is one of the popular neuro developmental disorder among kids, adolescents and in adults. The main Objective of the study isto assess the effectiveness of a video awareness programme regarding Attention deficit hyperactivity disorder (ADHD) among primary school teachers and parents of primary school children.Materials and Methods: A pre experimental, one group pre-test and post-test research design was adopted for this study. The study was conducted in selected schools of Mangalagiri, Guntur district, Andhra Pradesh. Fifty subjects of primary school teachers and sixty subjects of parents were selected by using convenient sampling technique. A structured questionnaire was developed to collect the sociodemographic data and Knowledge on Attention Deficit Disorders scale (KADDS) was used to assess the effectiveness of Video awareness programme regarding ADHD. Results: The findings of the study shown that Majority (62%) of the primary school teachers had bachelor’s degree in elementary education. Where as in parents’group majority (53%) of the parents had high school certificate. In primary school teachers, the mean score of pre-test was 16.78±3.78, and post-test mean score was 31.5±2.74, the obtained ‘t’ value (t=20.84, df = 49). In parents of primary school children group,the pre-test mean score was 15.06±3.91 and post-test mean score was 28.11±4.35, the obtained ‘t’ value (t=17.64, df= 59). The chi-square shown that there was a significant association between the primary school teachers pre-test level of knowledge with their (χ2=6.04) age, (χ2=8.7) education level,in parents of primary school children, there was a significant association between pre-test level of knowledge with their education level (χ2=19.64), family income (χ2=5.49). Conclusion:The study concluded that the level of knowledge was improved after administration of Video. Thus, Video is an effective strategy which can help in improving the level of knowledge among primary school teachers and parents of primary school children.