UNESCO · unesco.org
States over 1.6 billion learners in more than 190 countries were out of school at the April 2020 peak and that on average two-thirds of an academic year was lost worldwide.
Cited by 3 materials across Factrail · last used Jun 2026.
States over 1.6 billion learners in more than 190 countries were out of school at the April 2020 peak and that on average two-thirds of an academic year was lost worldwide.