How will school closures affect children in the long run? Wars, disease and natural disasters offer clues

Staff tape off social-distancing markings during preparations for reopening the temporarily closed Schloss-Schule elementary school on April 21, 2020 in Heppenheim, Germany.

London (CNN)Children across the globe have seen their schools closed because of the coronavirus pandemic.

According to the World Bank, 1.6 billion students were out of school during the first peak of the pandemic in April 2020, and almost 700 million remained out as 2020 drew to a close.
It may take years for the full impact of these months of missed schooling to be known, so what can history tell us about the long-term effects of disruptions to education?
    Nothing can be directly compared to the impact of the coronavirus pandemic, said Alberto Posso, professor of economics at RMIT University in Melbourne, Australia, but some parallels can be drawn. "As far as learning from history goes, I think the value is in the potential warning signs these things can give us," he said.
      Posso looked at examples including the Ebola epidemic in West Africa, teacher strikes in Argentina in the 1980s and World War II in a piece for The Conversation.