Two years later, Long left the school to become Bishop of Bathurst and A. W. Tonge was appointed headmaster. A second classroom building was built, now demolished to make way for the Richard and Elizabeth Tudor Centre for Contemporary Learning. In 1917, Trinity again appointed a new headmaster, Frank Shann, who would lead the school for the next two and a half decades. Under his tenure, the school grew to a total of 245 boys and many buildings were built, including the now demolished War Memorial Library, the junior school classroom building and the "Health Pavilion". "Molina" was bought from its owner, John Henning, as well as the neighbouring property, "Elsinore". The properties were subsequently renamed in 1925, "Molina" becoming Merritt House, "Elsinore" Roberts House and "Roxeth" Henty House. Frank Shann died in 1943.