李毓宏於1936年於嶺南附中初中部畢業後, 續升讀高中部, 1939年於高中部普通科修業期滿成績合格畢業, 畢業證書由私立嶺南大學鍾榮光校長及陳文駐主任簽發
Lee Yuk Wang continued to study at the High School of Lingnan-affiliated Middle School in Guangzhou in 1933. He then fulfilled the requirements and graduated his high school education 1939. The graduation certificate was issued by Dr. Chung Wing-kwong and Chan Man-chu.