(JTA) – The teachers at the Wisconsin high school whose students made a Nazi salute in a junior prom photo raised money for the Auschwitz-Birkenau Memorial and Museum. The teachers’ union at Baraboo High School agreed to donate to the institution after the school district decided that the students would not be disciplined due to their free-speech rights, the Baraboo News Republic reported. The Auschwitz museum was one of the first to level public criticism about the photo, and also the first to offer to help educate the district and the students.

The teachers sold 180 T-shirts with the message “No room for hate. This classroom. This school. This community. This state. This country. This world.” They raised $2,100. The staff members all wore their shirts on Pearl Harbor Day, Dec. 7, in a sign of unity. They plan to sell more shirts to the general community.

The photo was taken in the spring and involves about 50 students. It was posted originally in a private online album tagged #BarabooProud. It was taken by the parent of a student in the class.