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In page Hwa Chong Institution:

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During the Battle of Singapore, the school's clock tower, for its height and vantage point, served as a headquarters for the Allied defenders.[4] Following the war, the school resumed its predominant Chinese education. In the 1950s and 1960s, during periods of civil unrest in Singapore, many students, teachers and alumni participated in or led the anti-colonial riots.[1][5]