This page has a list of countries by Enrolment in pre-primary education, both sexes (number), according to officially-recognized international sources compiled by the World Bank. Total number of students enrolled in public and private pre-primary education institutions (ISCED 0.2) regardless of age. Within ISCED 0, early childhood educational development programmes are targeted at children aged 0 to 2 years; and pre-primary education programmes are targeted at children aged 3 years until the age to start ISCED 1.