The aim of the present study was to investigate and compare effectiveness of family, child, and family-child based intervention on the rate of ADHD symptoms in third grade students. The population for this study was all of students with ADHD diagnoses in the city of Isfahan, Iran. Multi-stage random sampling method was used to select subjects (60 children were included in this study). Children were randomly assigned into 4 groups, including 3 experimental and 1 control groups (each group consisted of 15 students). The children had been diagnosed by clinicians as having ADHD. In order to verify this diagnosis, Conner’s parental rating scale was used at baseline to confirm that children had ADHD as well. The results indicated a significant difference between the 4 groups (In post-test). Results showed that family-child based intervention is the most effective method to decrease students’ ADHD symptoms.