In 1921, Bishop Pozzoni, the Ordinary of Hong Kong, requested the Maryknoll Fathers to take over. Some of the boys were orphans while the rest were remanded by the Hong Kong government, the government giving a small monthly grant for each student. The Maryknoll Fathers renamed the school 'St Louis Industrial School' and equipped it with a printing press. The students became expert in this line and seven years later when the Paris Foreign Missions Society started their celebrated polyglot press at Nazareth in Pokfulam, they took into their employ many of these boys. When Brother Albert Staubli arrived, he added manual training to its curriculum in the way of carpentry. The American Maryknoller, Fr James Edward Walsh, who was one of the first four American missioners to arrive in China and the last Western missioner to be released by the Communist China in 1970, spent some time at the school too.