Catholic High School

Catholic High School (also known as CHS or Cat High) is an all-boys Catholic school in Singapore. It has a primary section offering a six-year primary education and a secondary section offering the four-year GCE 'O' Level education. From 2013, the secondary section will also offer the six-year Integrated Programme. The school is a Special Assistance Plan school, as well as a Gifted Education Program centre. Catholic High School is affiliated to Catholic Junior College.

Founded in 1935 by Rev. Fr. Edward Becheras, a French missionary, the school strives to nurture students who are fluent in both English and Chinese. The school has produced 20 President's Scholars and numerous recipients of other scholarships. Many of its alumni are leaders in the public and private sectors. It has also been ranked in the Band 1 tables of the Ministry of Education school academic rankings until such rankings were removed in 2012. In 2008, it was awarded the School Distinction Award under the MOE Master Plan of Awards, which recognizes high-achieving schools with exemplary processes and practices.

Catholic High School is notable for being the school selected by Lee Kuan Yew for his children, including current Singapore Prime Minister, Lee Hsien Loong.