The school moved to its current location in 1925. During World War II there were a number of military factories located nearby, including one operated by Nakajima Aircraft Company.[2]
In July 2018 during construction of a building a large number of World War II-era weapons were located buried at the school around 1-2 meters underground. Around 1,400 firearms (rifles and machine guns) and 1,200 swords were located.[3] Grenades, bullets and cannon shells were also discovered. It is thought that the weapons and ammunition were discarded at the end of the war by the Imperial Japanese Army.[4][5] The recovery work continued until August 3. Nishitōkyō city disposed of the swords and guns and personal of the Japan Self-Defense Forces disposed of the ammunition and explosives.[6] A total of around 300 bullets, shells and grenades were found.[7][8] While many articles described the edged weapons as "swords", they appeared to be Type 30 bayonets in published images.[9]
