This page has a list of countries by Repetition rate in primary education (all grades), both sexes (%), according to officially-recognized international sources compiled by the World Bank. Number of repeaters in primary education in a given school year, expressed as a percentage of enrolment in primary education in the previous school year. Divide the number of repeaters in primary education in school year t+1 by the number of pupils from the same cohort enrolled in primary education in the previous school year t.