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TOPSHOT - Children arrive to school for the start of the school year, at the Chaptal elementary school in Paris, on September 2, 2019. - In France some 12.4 million students crossed the doors of elementary schools (6.7 million), secondary school (3.4 million) and high schools (2.3 million) on September 2, 2019. (Photo by Martin BUREAU / AFP) (Photo credit should read MARTIN BUREAU/AFP/Getty Images)

TOPSHOT - Children arrive to school for the start of the school year, at the Chaptal elementary school in Paris, on September 2, 2019. - In France some 12.4 million students crossed the doors of elementary schools (6.7 million), secondary school (3.4 million) and high schools (2.3 million) on September 2, 2019. (Photo by Martin BUREAU / AFP)        (Photo credit should read MARTIN BUREAU/AFP/Getty Images)