BERLIN, GERMANY - JANUARY 07: Pupils from different countries attend a lesson in german language at a 'Welcome Class' for immigrant children, including children of migrants and refugees, at the Leo-Lionni-Schule primary school on January 7, 2016 in Berlin, Germany. Germany is investing in German language classes across the country by hiring more teachers and expanding the Federal Volunteer Service (Bundesfreiwilligendienst) in order to accomodate the hundreds of thousands of migrant and refugee children who have arrived in Germany over the past year. (Photo by Michael Gottschalk/Photothek via Getty Images)