During the Hong Kong 1967 leftist riots, Form 6 pupil Tsang Tak-sing was expelled from the school and prosecuted for distributing leaflets promoting Communism and public order crime. Tsang was sentenced to two years in prison. He later went on to become a deputy in the National People's Congress of Communist China, a member of the Central Policy Unit and, on 1 July 2007, the Secretary for Home Affairs in the Hong Kong Government. Ha Wing Ho was appointed principal in 1969.