1962年，傅漁冰校長離職，林湛繼任校長。林湛校長在任期間，因澳門受經濟衰退同社會動盪不安嘅時局影響，師生合力喺困難中謀求發展，嚟穩定校務。同年，澳校率先改中學五年制，由中一開始實施，並喺1967年秋開辦中六（大學預科）課程。林湛校長籌建「七十五週年紀念堂」，喺1972年啟用。
In 1962, President Fu Yubing resigned, and Lin Zhan succeeded him as president. During the tenure of President Lin Zhan, due to the economic recession and social turmoil in Macau, teachers and students worked together to seek development in the midst of difficulties and stabilize the school's affairs. In the same year, the school took the lead in changing the five-year secondary school system, which was implemented from the beginning of secondary school, and in the autumn of 1967, the senior three (pre-university) curriculum was introduced. President Lin Cham prepared for the construction of the "75th Anniversary Hall", which was opened in 1972.