A pupil smiles as he sits in a classroom at the Paul Lapie primary school in Bordeaux, southwestern France, on September 1, 2016 for the start of the school year. After two months of vacation, 12 million students begin today a new school year, with new programs, a controversial reorganisation of the secondary school and "a total and extreme vigilance" against possible attacks. (Photo by MEHDI FEDOUACH / AFP via Getty Images)
