Muslim students at a New York private school are taking a course on the Holocaust designed for young followers of Islam, a project backers hope will serve as a model for other Muslim schools. An after-school elective at Brooklyn Amity School, the course has brought a dozen 16 and 17-year-olds together every other week since October to learn about persecution and murder committed by the Nazis, and to hear from survivors. It will culminate in a trip to the United States Holocaust Memorial Museum in Washington, D.C., in April. “I don’t know much about the Holocaust and the events that...