Pupils from Ilkley Grammar School travelled to Munich to learn about German history.
The year 11 students visited Dachau, a concentration camp on the outskirts of Munich, and toured the city.
They also traced the route that Hitler and the Nazis took during their 1923 Putsch where they attempted, and failed, to overthrow the government.
The trip also included a visit to Nuremberg where students saw the Nazi rally grounds and the Museum of Fascination and Terror.
The school’s head of history, Dan Nuttall, said: “The students behaved entirely appropriately and were very supportive of each other in dealing with what can be a very emotional experience, particularly at Dachau concentration camp.”