The Purple Grass International Peace School is a non-profit school established by the Memorial Hall of the Victims in Nanjing Massacre by Japanese Invaders for the purpose of popularizing historical information related to the Nanjing Massacre, an atrocity that happened during World War II, calling on society around the world to cherish peace.

Since the first class on June 5, 2017, the Purple Grass International Peace School has been holding lectures and organizing practice activities. These efforts collectively enable overseas students to have an in-depth understanding and thinking about war and peace.

The school mainly focuses on peace education for foreign students and Chinese students who are preparing to study abroad. Training time will be set according to the different demands of students in every term.

Training content mainly includes: English seminars on the history of the Nanjing Massacre taught by guest historians; visits to the memorial hall and other exhibitions; visits to the original site of the Nanjing safety zone; face-to-face talks with survivors of war; as well as artistic creation, such as making purple grass bookmarks that symbolizes peace.

After completing the courses, the school will issue certificates to students.

As of the end of November 2021, the international peace school had received over 4,500 students from more than 90 countries.