The Foxborough Regional Charter School’s quest to collect 11 million postage stamps to symbolize the 11 million lives lost in the Holocaust reached a milestone last week when students reached 1.5 million, the number of children who died during one of history’s darkest chapters.

The achievement came in time for Friday’s 74th anniversary of Kristallnacht, also referred to as the Night of Broken Glass, in which the Nazis coordinated attacks against Jews throughout Germany and parts of Austria.