Fight Back to School (simplified Chinese: 逃学威龙; traditional Chinese: 逃學威龍) is a 1991 Hong Kong action comedy film directed by Gordon Chan and co-written with Barry Wong, who also acts in a supporting role. The film stars Stephen Chow, Sharla Cheung, Ng Man-tat, and Roy Cheung. The film was released theatrically in Hong Kong on 18 July 1991. It was one of the highest-grossing domestic films of all-time in Hong Kong.

https://en.wikipedia.org/wiki/Fight_Back_to_School