If you wish to enter Hong Kong for employment, investment, education, training or residence and you are not a person who has the right of abode or right to land in Hong Kong, you must obtain an entry visa before coming to Hong Kong. Students will need to obtain a tourist visa from the People’s Republic of China in order to study in Hong Kong. 

You may apply for a visa at the following address:

http://www.china-embassy.org/visapassport/english/hkqz.htm