Choi Hung Estate Catholic Secondary School (Chinese: 彩虹邨天主敎英文中學) is a boy's secondary school situated in Choi Hung Estate, Wong Tai Sin, Hong Kong. Established on 28 February 1965 by Roman Catholic Diocese of Hong Kong.

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School enrolled new students at Pui Shing Catholic Secondary School from March to August, and received them fees at Wong Tai Sin Catholic Primary School. In the early year, there were only 440 boys in 11 classes from form 1 to form 3, and 14 teachers. In first academic year, school shared its school building with Sanpokong Catholic Secondary School. On 28 February 1965, school was opened and inaugurated by Bishop Bianchi. 1967, there were already 847 boys in 22 classes from form 1 to form 5.

Broken Classroom

Medical room without medicine

彩天精神，輸波打人

• Lok Ying kwan, actor.
• Tsang Kin Fong, footballer.
• Anskar Leung Yu Hung, Clinical Professor, Li Ka Shing Faculty of Medicine, University of Hong Kong.

• "彩虹邨天主敎英文中學 Choi Hung Estate Catholic Secondary School". Choi Hung Estate Catholic Secondary School. Retrieved 5 October 2011.