A developmental screening tool to aid in the early detection of, and if needed, intervention for developmental delays in infants and children up to six years of age. Comprising one page of Yes/No questions that are completed by a child’s parent, caregiver,or health care professional, either at home or during a child wellness visit, the NDDS evaluates a child’s developmental health based on the following areas: vision, hearing, speech, language, fine and gross motor skills, cognition, social skills, emotional skills, and self-help skills. These skills are monitored and tracked at various intervals over a child’s first six years of life, with assessments occurring most frequently in the first three years of life. Each assessment interval has a corresponding one-page NDDS questionnaire, which includes various activities parents or caregivers can implement with their child to improve developmental areas. Any “No” responses are to be addressed with a child’s healthcare professional. Assessment visits also coincide with a child’s immunization schedule, which allows parents/caregivers and health care providers to coordinate both activities in one visit. The tool, which includes illustrations, activities to reinforce or augment positive developmental activities, and color-coding based on ages, is not scored.