ASQ-3 relies on parents to observe their child and to complete the simple questionnaires about their child’s abilities. Having parents complete the developmental questionnaires is not only cost effective, but also enhances the accuracy of screening by tapping into parents’ in-depth knowledge about their children. Using parent-completed tools also fulfills the spirit of Individuals with Disabilities Education Act (IDEA) amendments, which call for parents to be partners in their child’s assessment and intervention activities.