Approach: This research tests the hypothesis that habits are formed very early in life and that children can help their parents live healthier lives. The investigators attempt to test this hypothesis by evaluating the impact of an educational program focusing on diet, physical activity, knowledge of the human body, and management of emotions for preschool children aged 3 to 5 years, their parents/caregivers and teachers. The investigators will first assess the environmental factors, facilitators, and barriers to implementation of a health promotion educational program tailored for preschoolers in Harlem, New York. This information will be used to tailor the educational program for the children in Harlem. The investigators will evaluate the effectiveness of the program in children aged 3 to 5 years by randomly assigning blocks of schools to an up to 5-month educational and playful health promotion intervention or to usual curriculum. The program will also have components for teachers and parents of these children in order to make their learning environment conducive to positive change. The impact of our program will be assessed on children's knowledge, attitudes, habits, weight, exercise and diet using simple questionnaires and measurements.