Out-of-School Children (Primary Level)
Number of primary school-age children not enrolled in primary or secondary education.
Quick Reference
Unit
children
Category
Social Indicators
Metric Code
out_of_school_children
How It's Calculated
Total number of children of official primary school age (typically ages 6-11, varies by country) who are not enrolled in either primary or secondary school. Based on school enrollment administrative records and population census data. Uses UNESCO Institute for Statistics (UIS) methodology - compares official school age population to enrollment figures, excluding pre-primary and post-secondary students. Includes children who never enrolled and those who dropped out.
Why It Matters
Out-of-school children miss foundational literacy and numeracy skills, limiting future education and employment opportunities. Primary education is a human right (Universal Declaration of Human Rights, Article 26) and essential for achieving SDG 4 (quality education for all). Barriers include poverty (direct costs like uniforms, indirect costs like lost labor), distance to schools, conflict/displacement, disability, gender discrimination, and child marriage. As of 2023, an estimated 244 million children and youth (ages 6-18) were out of school globally, with primary-age children representing the largest share in low-income countries.
Understanding the Values
Very Low: < 100,000 out-of-school (near-universal primary education - most high-income countries) Low: 100,000 - 500,000 (isolated pockets - upper-middle-income countries) Moderate: 500,000 - 2 million (geographic/gender disparities - lower-middle-income countries) High: 2 million - 5 million (systemic barriers - low-income countries) Very High: > 5 million (crisis - conflict zones, fragile states) SDG Target 4.1: Ensure all children complete free, equitable, quality primary and secondary education by 2030 Global total: ~244 million out-of-school ages 6-18 (2023) Primary-age share: Higher in sub-Saharan Africa, South Asia Note: Girls face higher out-of-school rates in many regions due to early marriage, household duties, and safety concerns.
Related Metrics
Adult Literacy Rate
Percentage of population ages 15 and above who can read and write a short simple statement about their everyday life.
Child Labor Rate
Percentage of children ages 7-14 engaged in economic activity.
Primary School Enrollment Rate
Gross enrollment ratio for primary education, measuring total enrollment as percentage of primary school-age population.
Youth NEET Rate
Percentage of youth ages 15-24 not in employment, education, or training.
Data Quality & Coverage
Coverage: 180+ countries Update frequency: Annual (from administrative enrollment data) Sources: UN Data, UNESCO Institute for Statistics, World Bank Limitations: Administrative data quality varies - some countries lack complete enrollment registries, especially in rural areas. Population estimates (denominator) uncertain in countries without recent census. Does not capture school attendance (enrolled but not attending) or learning outcomes (attending but not learning). Age-grade distortions (overage/underage students) complicate classification. Refugee and displaced children often excluded from national statistics. COVID-19 pandemic caused major enrollment disruptions (2020-2022) with incomplete recovery.