Early childhood education involves the teaching of young children up until age 8. It focuses on learning through play based on theories that play meets children's physical, intellectual, language, emotional and social needs. Several studies have found benefits of early childhood education including increased IQ scores, higher test scores, and greater success in school and life. For example, the Perry Preschool Project found children who participated were more likely to graduate high school, be employed, and less likely to commit crimes.