Students of the eleventh grade sit with face masks in a classroom of the Phoenix high school in Dortmund, western Germany, on August 12, 2020, amid the novel coronavirus COVID-19 pandemic. Schools in the western federal state of North Rhine-Westphalia re-started under strict health guidelines after the summer holidays. / AFP / Ina FASSBENDER
Students of the eleventh grade sit with face masks in a classroom of the Phoenix high school in Dortmund, western Germany, on August 12.  Ina Fassbender/ AFP

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