 Also in 1912, during the First Balkan War, about 30 students volunteered for the defense of the capital against the advancing Bulgarian army.The school name was changed to İstanbul Sultanisi (Istanbul High School) in 1913.Following the closing of the foreign schools in İstanbul due to the beginning of the First World War, İstanbul Sultanisi was moved to the buildings of the Saint Benoit High School, and some parts of the buildings were changed to dormitories.