Preschool education is the provision of education for children before the commencement of statutory education, usually between the ages of three and five, dependent on the jurisdiction. Preschool is also known as nursery school, or kindergarten. Preschool work is organized within a framework that professional educators create. The framework includes structural (administration, class size, teacher-child ratio, etc.), process (quality of classroom environments, teacher-child interactions, etc), a… (More on Preschool)