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The third grade class W15d pictured during an economics and law main subject lesson with teacher Christoph Mathys (standing) at the gymnasium of the Cantonal School Solothurn, Switzerland, on May 15, 2018. The Cantonal School Solothurn consists of a gymnasium, a specialized upper secondary school (Fachmittelschule FMS) and a secondary school (Sekundarschule P), which prepares the pupils for the gymnasium. (KEYSTONE/Christian Beutler)